diff --git a/xwords4/android/XWords4/build_unchecked.xml b/xwords4/android/XWords4/build_unchecked.xml
new file mode 100644
index 000000000..071bf90b8
--- /dev/null
+++ b/xwords4/android/XWords4/build_unchecked.xml
@@ -0,0 +1,516 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project name="XWords4" default="release">
+
+    <!-- The local.properties file is created and updated by the 'android' tool.
+         It contains the path to the SDK. It should *NOT* be checked in in Version
+         Control Systems. -->
+    <exec dir=".." executable="./scripts/setup_local_props.sh" output="ant_out.txt" />
+    <property file="local.properties" />
+
+    <!-- The build.properties file can be created by you and is never touched
+         by the 'android' tool. This is the place to change some of the default property values
+         used by the Ant rules.
+         Here are some properties you may want to change/update:
+
+         application.package
+             the name of your application package as defined in the manifest. Used by the
+             'uninstall' rule.
+         source.dir
+             the name of the source directory. Default is 'src'.
+         out.dir
+             the name of the output directory. Default is 'bin'.
+
+         Properties related to the SDK location or the project target should be updated
+          using the 'android' tool with the 'update' action.
+
+         This file is an integral part of the build system for your application and
+         should be checked in in Version Control Systems.
+
+         -->
+    <property file="build.properties" />
+
+    <!-- The default.properties file is created and updated by the 'android' tool, as well
+         as ADT.
+         This file is an integral part of the build system for your application and
+         should be checked in in Version Control Systems. -->
+    <property file="default.properties" />
+
+    <!-- Custom Android task to deal with the project target, and import the proper rules.
+         This requires ant 1.6.0 or above. -->
+    <path id="android.antlibs">
+        <pathelement path="${sdk.dir}/tools/lib/anttasks.jar" />
+        <pathelement path="${sdk.dir}/tools/lib/sdklib.jar" />
+        <pathelement path="${sdk.dir}/tools/lib/androidprefs.jar" />
+        <pathelement path="${sdk.dir}/tools/lib/apkbuilder.jar" />
+        <pathelement path="${sdk.dir}/tools/lib/jarutils.jar" />
+    </path>
+
+    <taskdef name="setup"
+        classname="com.android.ant.SetupTask"
+        classpathref="android.antlibs" />
+
+    <exec dir=".." executable="./scripts/genvers.sh" output="ant_out.txt" />
+
+    <!-- Execute the Android Setup task that will setup some properties specific to the target,
+         and import the build rules files.
+
+         The rules file is imported from
+            <SDK>/platforms/<target_platform>/templates/android_rules.xml
+
+         To customize some build steps for your project:
+         - copy the content of the main node <project> from android_rules.xml
+         - paste it in this build.xml below the <setup /> task.
+         - disable the import by changing the setup task below to <setup import="false" />
+
+         This will ensure that the properties are setup correctly but that your customized
+         build steps are used.
+    -->
+    <setup import="false"/>
+
+
+    <!--
+        This rules file is meant to be imported by the custom Ant task:
+            com.android.ant.AndroidInitTask
+
+        The following properties are put in place by the importing task:
+            android.jar, android.aidl, aapt, aidl, and dx
+
+        Additionnaly, the task sets up the following classpath reference:
+            android.target.classpath
+        This is used by the compiler task as the boot classpath.
+    -->
+
+    <!-- Custom tasks -->
+    <taskdef name="aaptexec"
+        classname="com.android.ant.AaptExecLoopTask"
+        classpathref="android.antlibs" />
+
+    <taskdef name="apkbuilder"
+        classname="com.android.ant.ApkBuilderTask"
+        classpathref="android.antlibs" />
+
+    <taskdef name="xpath"
+        classname="com.android.ant.XPathTask"
+        classpathref="android.antlibs" />
+
+    <!-- Properties -->
+
+    <!-- Tells adb which device to target. You can change this from the command line
+         by invoking "ant -Dadb.device.arg=-d" for device "ant -Dadb.device.arg=-e" for
+         the emulator. -->
+    <property name="adb.device.arg" value="" />
+
+    <property name="android.tools.dir" location="${sdk.dir}/tools" />
+    <!-- Name of the application package extracted from manifest file -->
+    <xpath input="AndroidManifest.xml" expression="/manifest/@package"
+                output="manifest.package" />
+
+    <!-- Input directories -->
+    <property name="source.dir" value="src" />
+    <property name="source.absolute.dir" location="${source.dir}" />
+    <property name="gen.dir" value="gen" />
+    <property name="gen.absolute.dir" location="${gen.dir}" />
+    <property name="resource.dir" value="res" />
+    <property name="resource.absolute.dir" location="${resource.dir}" />
+    <property name="asset.dir" value="assets" />
+    <property name="asset.absolute.dir" location="${asset.dir}" />
+
+    <!-- Directory for the third party java libraries -->
+    <property name="external.libs.dir" value="libs" />
+    <property name="external.libs.absolute.dir" location="${external.libs.dir}" />
+
+    <!-- Directory for the native libraries -->
+    <property name="native.libs.dir" value="libs" />
+    <property name="native.libs.absolute.dir" location="${native.libs.dir}" />
+
+    <!-- Output directories -->
+    <property name="out.dir" value="bin" />
+    <property name="out.absolute.dir" location="${out.dir}" />
+    <property name="out.classes.dir" value="${out.absolute.dir}/classes" />
+    <property name="out.classes.absolute.dir" location="${out.classes.dir}" />
+
+    <!-- Intermediate files -->
+    <property name="dex.file.name" value="classes.dex" />
+    <property name="intermediate.dex.file" location="${out.absolute.dir}/${dex.file.name}" />
+
+    <!-- The final package file to generate -->
+    <property name="out.debug.unaligned.package"
+                  location="${out.absolute.dir}/${ant.project.name}-debug-unaligned.apk" />
+    <property name="out.debug.package"
+                  location="${out.absolute.dir}/${ant.project.name}-debug.apk" />
+    <property name="out.unsigned.package"
+                  location="${out.absolute.dir}/${ant.project.name}-unsigned.apk" />
+    <property name="out.unaligned.package"
+                  location="${out.absolute.dir}/${ant.project.name}-unaligned.apk" />
+    <property name="out.release.package"
+                  location="${out.absolute.dir}/${ant.project.name}-release.apk" />
+
+    <!-- Verbosity -->
+    <property name="verbose" value="false" />
+    <!-- This is needed by emma as it uses multilevel verbosity instead of simple 'true' or 'false'
+         The property 'verbosity' is not user configurable and depends exclusively on 'verbose'
+         value.-->
+    <condition property="verbosity" value="verbose" else="quiet">
+        <istrue value="${verbose}" />
+    </condition>
+    <!-- This is needed to switch verbosity of zipalign and aapt. Depends exclusively on 'verbose'
+         -->
+    <condition property="v.option" value="-v" else="">
+        <istrue value="${verbose}" />
+    </condition>
+    <!-- This is needed to switch verbosity of dx. Depends exclusively on 'verbose' -->
+    <condition property="verbose.option" value="--verbose" else="">
+        <istrue value="${verbose}" />
+    </condition>
+
+    <!-- Tools -->
+    <condition property="exe" value=".exe" else=""><os family="windows" /></condition>
+    <property name="adb" location="${android.tools.dir}/adb${exe}" />
+    <property name="zipalign" location="${android.tools.dir}/zipalign${exe}" />
+
+    <!-- Emma configuration -->
+    <property name="emma.dir" value="${sdk.dir}/tools/lib" />
+        <path id="emma.lib">
+            <pathelement location="${emma.dir}/emma.jar" />
+            <pathelement location="${emma.dir}/emma_ant.jar" />
+        </path>
+    <taskdef resource="emma_ant.properties" classpathref="emma.lib" />
+    <!-- End of emma configuration -->
+
+    <!-- Macros -->
+
+    <!-- Configurable macro, which allows to pass as parameters output directory,
+         output dex filename and external libraries to dex (optional) -->
+    <macrodef name="dex-helper">
+       <element name="external-libs" optional="yes" />
+       <element name="extra-parameters" optional="yes" />
+       <sequential>
+         <echo>Converting compiled files and external libraries into ${intermediate.dex.file}...
+         </echo>
+         <apply executable="${dx}" failonerror="true" parallel="true">
+             <arg value="--dex" />
+             <arg value="--output=${intermediate.dex.file}" />
+             <extra-parameters />
+             <arg line="${verbose.option}" />
+             <arg path="${out.classes.absolute.dir}" />
+             <fileset dir="${external.libs.absolute.dir}" includes="*.jar" />
+             <external-libs />
+         </apply>
+       </sequential>
+    </macrodef>
+
+    <!-- This is macro that enable passing variable list of external jar files to ApkBuilder
+         Example of use:
+         <package-helper>
+             <extra-jars>
+                <jarfolder path="my_jars" />
+                <jarfile path="foo/bar.jar" />
+                <jarfolder path="your_jars" />
+             </extra-jars>
+         </package-helper> -->
+    <macrodef name="package-helper">
+        <attribute name="sign.package" />
+        <element name="extra-jars" optional="yes" />
+        <sequential>
+            <apkbuilder
+                    outfolder="${out.absolute.dir}"
+                    basename="${ant.project.name}"
+                    signed="@{sign.package}"
+                    verbose="${verbose}">
+                <file path="${intermediate.dex.file}" />
+                <sourcefolder path="${source.absolute.dir}" />
+                <nativefolder path="${native.libs.absolute.dir}" />
+                <jarfolder path="${external.libs.absolute.dir}" />
+                <extra-jars/>
+            </apkbuilder>
+        </sequential>
+    </macrodef>
+
+    <!-- This is macro which zipaligns in.package and outputs it to out.package. Used by targets
+         debug, -debug-with-emma and release.-->
+    <macrodef name="zipalign-helper">
+        <attribute name="in.package" />
+        <attribute name="out.package" />
+        <sequential>
+            <echo>Running zip align on final apk...</echo>
+            <exec executable="${zipalign}" failonerror="true">
+                <arg line="${v.option}" />
+                <arg value="-f" />
+                <arg value="4" />
+                <arg path="@{in.package}" />
+                <arg path="@{out.package}" />
+            </exec>
+        </sequential>
+    </macrodef>
+
+    <!-- This is macro used only for sharing code among two targets, -install and
+         -install-with-emma which do exactly the same but differ in dependencies -->
+    <macrodef name="install-helper">
+        <sequential>
+            <echo>Installing ${out.debug.package} onto default emulator or device...</echo>
+            <exec executable="${adb}" failonerror="true">
+                <arg line="${adb.device.arg}" />
+                <arg value="install" />
+                <arg value="-r" />
+                <arg path="${out.debug.package}" />
+            </exec>
+        </sequential>
+    </macrodef>
+
+    <!-- Rules -->
+
+    <!-- Creates the output directories if they don't exist yet. -->
+    <target name="-dirs">
+        <echo>Creating output directories if needed...</echo>
+        <mkdir dir="${resource.absolute.dir}" />
+        <mkdir dir="${external.libs.absolute.dir}" />
+        <mkdir dir="${gen.absolute.dir}" />
+        <mkdir dir="${out.absolute.dir}" />
+        <mkdir dir="${out.classes.absolute.dir}" />
+    </target>
+
+    <!-- Generates the R.java file for this project's resources. -->
+    <target name="-resource-src" depends="-dirs">
+        <echo>Generating R.java / Manifest.java from the resources...</echo>
+        <exec executable="${aapt}" failonerror="true">
+            <arg value="package" />
+            <arg line="${v.option}" />
+            <arg value="-m" />
+            <arg value="-J" />
+            <arg path="${gen.absolute.dir}" />
+            <arg value="-M" />
+            <arg path="AndroidManifest.xml" />
+            <arg value="-S" />
+            <arg path="${resource.absolute.dir}" />
+            <arg value="-I" />
+            <arg path="${android.jar}" />
+        </exec>
+    </target>
+
+    <!-- Generates java classes from .aidl files. -->
+    <target name="-aidl" depends="-dirs">
+        <echo>Compiling aidl files into Java classes...</echo>
+        <apply executable="${aidl}" failonerror="true">
+            <arg value="-p${android.aidl}" />
+            <arg value="-I${source.absolute.dir}" />
+            <arg value="-o${gen.absolute.dir}" />
+            <fileset dir="${source.absolute.dir}">
+                <include name="**/*.aidl" />
+            </fileset>
+        </apply>
+    </target>
+
+    <!-- Compiles this project's .java files into .class files. -->
+    <target name="compile" depends="-resource-src, -aidl"
+                description="Compiles project's .java files into .class files">
+        <!-- If android rules are used for a test project, its classpath should include
+             tested project's location -->
+        <condition property="extensible.classpath"
+                           value="${tested.project.absolute.dir}/bin/classes" else=".">
+            <isset property="tested.project.absolute.dir" />
+        </condition>
+        <javac encoding="ascii" target="1.5" debug="true" extdirs=""
+                destdir="${out.classes.absolute.dir}"
+                bootclasspathref="android.target.classpath"
+                verbose="${verbose}" classpath="${extensible.classpath}">
+            <src path="${source.absolute.dir}" />
+            <src path="${gen.absolute.dir}" />
+            <classpath>
+                <fileset dir="${external.libs.absolute.dir}" includes="*.jar" />
+            </classpath>
+            <compilerarg value="-Xlint:unchecked"/> 
+        </javac>
+    </target>
+
+    <!-- Converts this project's .class files into .dex files -->
+    <target name="-dex" depends="compile">
+        <dex-helper />
+    </target>
+
+    <!-- Puts the project's resources into the output package file
+         This actually can create multiple resource package in case
+         Some custom apk with specific configuration have been
+         declared in default.properties.
+         -->
+    <target name="-package-resources">
+        <echo>Packaging resources</echo>
+        <aaptexec executable="${aapt}"
+                command="package"
+                manifest="AndroidManifest.xml"
+                resources="${resource.absolute.dir}"
+                assets="${asset.absolute.dir}"
+                androidjar="${android.jar}"
+                outfolder="${out.absolute.dir}"
+                basename="${ant.project.name}" />
+    </target>
+
+    <!-- Packages the application and sign it with a debug key. -->
+    <target name="-package-debug-sign" depends="-dex, -package-resources">
+        <package-helper sign.package="true" />
+    </target>
+
+    <!-- Packages the application without signing it. -->
+    <target name="-package-no-sign" depends="-dex, -package-resources">
+        <package-helper sign.package="false" />
+    </target>
+
+    <target name="-compile-tested-if-test" if="tested.project.dir" unless="do.not.compile.again">
+       <subant target="compile">
+            <fileset dir="${tested.project.absolute.dir}" includes="build.xml" />
+       </subant>
+    </target>
+
+    <!-- Builds debug output package, provided all the necessary files are already dexed -->
+    <target name="debug" depends="-compile-tested-if-test, -package-debug-sign"
+                description="Builds the application and signs it with a debug key.">
+        <zipalign-helper in.package="${out.debug.unaligned.package}"
+                                   out.package="${out.debug.package}" />
+        <echo>Debug Package: ${out.debug.package}</echo>
+    </target>
+
+    <target name="-release-check">
+        <condition property="release.sign">
+            <and>
+                <isset property="key.store" />
+                <isset property="key.alias" />
+            </and>
+        </condition>
+    </target>
+
+    <target name="-release-nosign" depends="-release-check" unless="release.sign">
+        <echo>No key.store and key.alias properties found in build.properties.</echo>
+        <echo>Please sign ${out.unsigned.package} manually</echo>
+        <echo>and run zipalign from the Android SDK tools.</echo>
+    </target>
+
+    <target name="release" depends="-package-no-sign, -release-nosign" if="release.sign"
+                description="Builds the application. The generated apk file must be signed before
+                            it is published.">
+        <!-- Gets passwords -->
+        <input
+                message="Please enter keystore password (store:${key.store}):"
+                addproperty="key.store.password" />
+        <input
+                message="Please enter password for alias '${key.alias}':"
+                addproperty="key.alias.password" />
+
+        <!-- Signs the APK -->
+        <echo>Signing final apk...</echo>
+        <signjar
+                jar="${out.unsigned.package}"
+                signedjar="${out.unaligned.package}"
+                keystore="${key.store}"
+                storepass="${key.store.password}"
+                alias="${key.alias}"
+                keypass="${key.alias.password}"
+                verbose="${verbose}" />
+
+        <!-- Zip aligns the APK -->
+        <zipalign-helper in.package="${out.unaligned.package}"
+                                   out.package="${out.release.package}" />
+        <echo>Release Package: ${out.release.package}</echo>
+    </target>
+
+    <target name="install" depends="debug"
+                description="Installs/reinstalls the debug package onto a running
+                            emulator or device. If the application was previously installed,
+                            the signatures must match." >
+        <install-helper />
+    </target>
+
+    <target name="-uninstall-check">
+        <condition property="uninstall.run">
+           <isset property="manifest.package" />
+        </condition>
+    </target>
+
+    <target name="-uninstall-error" depends="-uninstall-check" unless="uninstall.run">
+        <echo>Unable to run 'ant uninstall', manifest.package property is not defined.
+        </echo>
+    </target>
+
+    <!-- Uninstalls the package from the default emulator/device -->
+    <target name="uninstall" depends="-uninstall-error" if="uninstall.run"
+                description="Uninstalls the application from a running emulator or device.">
+        <echo>Uninstalling ${manifest.package} from the default emulator or device...</echo>
+        <exec executable="${adb}" failonerror="true">
+            <arg line="${adb.device.arg}" />
+            <arg value="uninstall" />
+            <arg value="${manifest.package}" />
+        </exec>
+    </target>
+
+    <target name="clean" description="Removes output files created by other targets.">
+        <delete dir="${out.absolute.dir}" verbose="${verbose}" />
+        <delete dir="${gen.absolute.dir}" verbose="${verbose}" />
+    </target>
+
+    <!-- Targets for code-coverage measurement purposes, invoked from external file -->
+
+    <!-- Emma-instruments tested project classes (compiles the tested project if necessary)
+             and writes instrumented classes to ${instrumentation.absolute.dir}/classes -->
+    <target name="-emma-instrument" depends="compile">
+        <echo>Instrumenting classes from ${out.absolute.dir}/classes...</echo>
+        <!-- It only instruments class files, not any external libs -->
+        <emma enabled="true">
+            <instr verbosity="${verbosity}"
+                   mode="overwrite"
+                   instrpath="${out.absolute.dir}/classes"
+                   outdir="${out.absolute.dir}/classes">
+            </instr>
+            <!-- TODO: exclusion filters on R*.class and allowing custom exclusion from
+                 user defined file -->
+        </emma>
+    </target>
+
+    <target name="-dex-instrumented" depends="-emma-instrument">
+       <dex-helper>
+          <extra-parameters>
+            <arg value="--no-locals" />
+          </extra-parameters>
+          <external-libs>
+            <fileset file="${emma.dir}/emma_device.jar" />
+          </external-libs>
+       </dex-helper>
+    </target>
+
+    <!-- Invoked from external files for code coverage purposes -->
+    <target name="-package-with-emma" depends="-dex-instrumented, -package-resources">
+        <package-helper sign.package="true">
+            <extra-jars>
+                <!-- Injected from external file -->
+                <jarfile path="${emma.dir}/emma_device.jar" />
+            </extra-jars>
+        </package-helper>
+    </target>
+
+    <target name="-debug-with-emma" depends="-package-with-emma">
+        <zipalign-helper in.package="${out.debug.unaligned.package}"
+                                   out.package="${out.debug.package}" />
+    </target>
+
+    <target name="-install-with-emma" depends="-debug-with-emma">
+        <install-helper />
+    </target>
+
+    <!-- End of targets for code-coverage measurement purposes -->
+
+    <target name="help">
+        <!-- displays starts at col 13
+              |13                                                              80| -->
+        <echo>Android Ant Build. Available targets:</echo>
+        <echo>   help:      Displays this help.</echo>
+        <echo>   clean:     Removes output files created by other targets.</echo>
+        <echo>   compile:   Compiles project's .java files into .class files.</echo>
+        <echo>   debug:     Builds the application and signs it with a debug key.</echo>
+        <echo>   release:   Builds the application. The generated apk file must be</echo>
+        <echo>              signed before it is published.</echo>
+        <echo>   install:   Installs/reinstalls the debug package onto a running</echo>
+        <echo>              emulator or device.</echo>
+        <echo>              If the application was previously installed, the</echo>
+        <echo>              signatures must match.</echo>
+        <echo>   uninstall: Uninstalls the application from a running emulator or</echo>
+        <echo>              device.</echo>
+    </target>
+
+</project>