Add support for building AILD files.

This brings in the SourceProcessor, SourceGenerator and
DependencyGraph from the ant tasks. The dependency graph
is only needed because Gradle doesn't give us the list
of changed files just yet.

Change-Id: I4e9c8ccb032078529516af29b2287b21adac05cc
diff --git a/testapps/aidl/build.gradle b/testapps/aidl/build.gradle
new file mode 100644
index 0000000..be4c4d9
--- /dev/null
+++ b/testapps/aidl/build.gradle
@@ -0,0 +1,17 @@
+//
+// A basic Android application that follows all the conventions
+//
+buildscript {
+    repositories {
+        maven { url '../../repo' }
+    }
+    dependencies {
+        classpath 'com.android.build:gradle-android:0.1-SNAPSHOT'
+    }
+}
+apply plugin: 'android'
+
+android {
+    target = "android-15"
+
+}
\ No newline at end of file