Add libhwui, to hardware accelerate the Canvas API using OpenGL ES 2.0.

This is the initial checkin to setup the library and turn on OEGL ES 2.0
in ViewRoot, not a functional renderer.

Change-Id: I6655c54166e2967da2e21e7d6dcfba78bf113b44
diff --git a/tests/HwAccelerationTest/AndroidManifest.xml b/tests/HwAccelerationTest/AndroidManifest.xml
index 22feeca..2ff0b2c 100644
--- a/tests/HwAccelerationTest/AndroidManifest.xml
+++ b/tests/HwAccelerationTest/AndroidManifest.xml
@@ -17,7 +17,9 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.google.android.test.hwui">
 
-    <application android:label="HwUi">
+    <application
+        android:label="HwUi"
+        android:hardwareAccelerated="true">
 
         <activity android:name="HwUiActivity">
             <intent-filter>