use different uuid for dbg variant so it's not cross-sending BT

messages with other variants, causing among other problems spurious
"deleted on other device" warnings.

xwords4/android/XWords4/jni/Android.mk

@@ -42,6 +42,7 @@ LOCAL_DEFINES += \
 	-DNATIVE_NLI \
 	-DCOMMS_VERSION=1 \
 	-DINITIAL_CLIENT_VERS=${INITIAL_CLIENT_VERS} \
+	-DVARIANT=\"${VARIANT}\" \
 	-DRELAY_ROOM_DEFAULT=\"\" \
 	-D__LITTLE_ENDIAN \
 

xwords4/android/XWords4/jni/xwjni.c

@@ -565,8 +565,14 @@ Java_org_eehouse_android_xw4_jni_XwJNI_comms_1getUUID
 {
     jstring jstr = NULL;
 #ifdef XWFEATURE_BLUETOOTH
-    const char* uuid = XW_BT_UUID;
-    XP_LOGF( "uuid: %s", uuid );
+    const char* uuid;
+    if ( 0 == XP_STRCMP( VARIANT, "xw4" ) ) {
+        uuid = XW_BT_UUID;
+    } else if ( 0 == XP_STRCMP( VARIANT, "xw4dbg" ) ) {
+        uuid = XW_BT_UUID_DBG;
+    } else {
+        XP_ASSERT(0);
+    }
     jstr = (*env)->NewStringUTF( env, uuid );
 #endif
     return jstr;

xwords4/android/scripts/common_targets.xml

@@ -35,6 +35,7 @@
             <arg value="INITIAL_CLIENT_VERS=${INITIAL_CLIENT_VERS}" />
             <arg value="CHAT_ENABLED=${CHAT_ENABLED}" />
             <arg value="THUMBNAIL_ENABLED=${THUMBNAIL_ENABLED}" />
+            <arg value="VARIANT=${VARIANT_NAME}" />
         </exec>
 
         <exec dir="." executable="../scripts/mkimages.sh" 

xwords4/common/comms.h

@@ -59,6 +59,7 @@ typedef enum {
 
 #ifdef XWFEATURE_BLUETOOTH
 # define XW_BT_UUID "7be0d084-ff89-4d6d-9c78-594773a6f963"
+# define XW_BT_UUID_DBG "b079b640-35fe-11e5-a432-0002a5d5c51b"
 
 # define XW_BT_NAME "Crosswords"
 #endif