remove requirement for gcm.jar

remove from xw4d version too since it can't work anyway.

xwords4/android/app/build.gradle

@@ -197,7 +197,7 @@ android {
 
 dependencies {
     // Look into replacing this with a fetch too PENDING
-    compile files('../libs/gcm.jar')
+    xw4Compile files('../libs/gcm.jar')
 
     compile 'com.android.support:support-v4:23.4.0'
 

xwords4/android/app/src/main/java/org/eehouse/android/xw4/DevID.java

@@ -31,8 +31,6 @@ package org.eehouse.android.xw4;
 
 import android.content.Context;
 
-import com.google.android.gcm.GCMRegistrar;
-
 public class DevID {
     private static final String TAG = DevID.class.getSimpleName();
 
@@ -137,7 +135,7 @@ public class DevID {
         if ( 0 != storedVers && storedVers < curVers ) {
             result = "";        // Don't trust what registrar has
         } else {
-            result = GCMRegistrar.getRegistrationId( context );
+            result = GCMStub.getRegistrationId( context );
         }
         return result;
     }

xwords4/android/app/src/xw4/java/org/eehouse/android/xw4/GCMStub.java

@@ -0,0 +1,32 @@
+/* -*- compile-command: "find-and-gradle.sh insXw4Deb"; -*- */
+/*
+ * Copyright 2010 - 2015 by Eric House (xwords@eehouse.org).  All rights
+ * reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+package org.eehouse.android.xw4;
+
+import android.content.Context;
+import com.google.android.gcm.GCMRegistrar;
+
+class GCMStub {
+
+    public static String getRegistrationId( Context context )
+    {
+        return GCMRegistrar.getRegistrationId( context );
+    }
+}

xwords4/android/app/src/xw4d/java/org/eehouse/android/xw4/GCMStub.java

@@ -0,0 +1,29 @@
+/* -*- compile-command: "find-and-gradle.sh insXw4dDeb"; -*- */
+/*
+ * Copyright 2017 by Eric House (xwords@eehouse.org).  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+package org.eehouse.android.xw4;
+
+import android.content.Context;
+
+class GCMStub {
+    public static String getRegistrationId( Context context )
+    {
+        return "";
+    }
+}

xwords4/android/app/src/xw4fdroid/java/org/eehouse/android/xw4/GCMStub.java

@@ -0,0 +1 @@
+../../../../../../xw4d/java/org/eehouse/android/xw4/GCMStub.java