Cleaned up OpenGLUI samples and added Blasteroids.

samples/openglui/android-webgl-raytrace/project.properties

Index: samples/openglui/android-webgl-raytrace/project.properties
===================================================================
--- samples/openglui/android-webgl-raytrace/project.properties	(revision 0)
+++ samples/openglui/android-webgl-raytrace/project.properties	(revision 0)
@@ -0,0 +1,21 @@
+# This file is automatically generated by Android Tools.
+# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
+#
+# This file must be checked in Version Control Systems.
+#
+# To customize properties used by the Ant build system edit
+# "ant.properties", and override values to adapt the script to your
+# project structure.
+#
+# To enable ProGuard to shrink and obfuscate your code, uncomment this (available properties: sdk.dir, user.home):
+#proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt
+
+# Location of the SDK. This is only used by Ant
+# For customization when using a Version Control System, please read the
+# header note.
+# Normally this would go in local.properties and not be in the VCS
+# but we want this to refer to the Android SDK in ~/third_party.
+sdk.dir=../../../third_party/android_tools/sdk
+
+# Project target.
+target=android-16