First draft of fbo in renderscript.
Updating samples and benchmark

Change-Id: I469bf8b842fca72b59475c8fa024c12cf0e14954
diff --git a/libs/rs/rsContext.h b/libs/rs/rsContext.h
index 72574a6..eacfdf7 100644
--- a/libs/rs/rsContext.h
+++ b/libs/rs/rsContext.h
@@ -38,6 +38,7 @@
 #include "rsProgramRaster.h"
 #include "rsProgramVertex.h"
 #include "rsShaderCache.h"
+#include "rsFBOCache.h"
 #include "rsVertexArray.h"
 
 #include "rsgApiStructs.h"
@@ -119,6 +120,7 @@
 
     ScriptCState mScriptC;
     ShaderCache mShaderCache;
+    FBOCache mFBOCache;
 
     void swapBuffers();
     void setRootScript(Script *);