Improve string byte backing ownership, add gradle file, up version, improve build packaging rules.

examples/android/build.gradle

@@ -0,0 +1,37 @@
+buildscript {
+    repositories {
+        mavenCentral()
+    }
+
+    dependencies {
+ 		classpath 'com.android.tools.build:gradle:1.0.1'
+    }
+}
+
+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 20
+    buildToolsVersion "20.0.0"
+    defaultConfig {
+        minSdkVersion 13
+        targetSdkVersion 20
+    }
+    
+    sourceSets {
+        main {
+            manifest.srcFile 'AndroidManifest.xml'
+            java.srcDirs = ['src']
+            res.srcDirs = ['res']
+            assets.srcDirs = ['assets']
+        }
+    }
+}
+
+repositories {
+	mavenCentral()
+}
+
+dependencies {
+	compile 'org.luaj:luaj-jse:3.0.1'
+}