Allow setting a different Gradle plugin version.

Turns out, the Gradle version (2.10) is NOT the same as the plugin version (2.1.0). These have to be treated separately.

dependencies/extension-api/build.gradle

@@ -6,7 +6,7 @@ buildscript {
 	}
 	
 	dependencies {
-		classpath 'com.android.tools.build:gradle:2.1.0'
+		classpath 'com.android.tools.build:gradle:::ANDROID_GRADLE_PLUGIN::'
 	}
 }
 

lime/tools/platforms/AndroidPlatform.hx

@@ -313,6 +313,7 @@ class AndroidPlatform extends PlatformTarget {
 		context.ANDROID_EXTENSIONS = project.config.getArrayString ("android.extension");
 		context.ANDROID_PERMISSIONS = project.config.getArrayString ("android.permission", [ "android.permission.WAKE_LOCK", "android.permission.INTERNET", "android.permission.VIBRATE", "android.permission.ACCESS_NETWORK_STATE" ]);
 		context.ANDROID_GRADLE_VERSION = project.config.getString ("android.gradle-version", "2.10");
+		context.ANDROID_GRADLE_PLUGIN = project.config.getString ("android.gradle-plugin", "2.1.0");
 		context.ANDROID_LIBRARY_PROJECTS = [];
 		
 		var escaped = ~/([ #!=\\:])/g;

templates/android/template/build.gradle

@@ -7,7 +7,7 @@ buildscript {
 		}
 	}
 	dependencies {
-		classpath 'com.android.tools.build:gradle:2.1.0'
+		classpath 'com.android.tools.build:gradle:::ANDROID_GRADLE_PLUGIN::'
 		
 		// NOTE: Do not place your application dependencies here; they belong
 		// in the individual module build.gradle files
@@ -39,7 +39,7 @@ configure(subprojects.findAll {!it.file('build.gradle').exists() && it.file('bui
 		}
 		
 		dependencies {
-			classpath 'com.android.tools.build:gradle:2.1.0'
+			classpath 'com.android.tools.build:gradle:::ANDROID_GRADLE_PLUGIN::'
 		}
 	}
 	

templates/extension/dependencies/android/build.gradle

@@ -6,7 +6,7 @@ buildscript {
 	}
 	
 	dependencies {
-		classpath 'com.android.tools.build:gradle:2.1.0'
+		classpath 'com.android.tools.build:gradle:::ANDROID_GRADLE_PLUGIN::'
 	}
 }