First draft of fbo in renderscript.
Updating samples and benchmark

Change-Id: I469bf8b842fca72b59475c8fa024c12cf0e14954
diff --git a/RenderScriptDefines.h b/RenderScriptDefines.h
index 4e1ac88..bb275b5 100644
--- a/RenderScriptDefines.h
+++ b/RenderScriptDefines.h
@@ -84,6 +84,7 @@
     RS_ALLOCATION_USAGE_GRAPHICS_TEXTURE = 0x0002,
     RS_ALLOCATION_USAGE_GRAPHICS_VERTEX = 0x0004,
     RS_ALLOCATION_USAGE_GRAPHICS_CONSTANTS = 0x0008,
+    RS_ALLOCATION_USAGE_GRAPHICS_RENDER_TARGET = 0x0010,
 
     RS_ALLOCATION_USAGE_ALL = 0x000F
 };
@@ -147,6 +148,7 @@
     RS_KIND_PIXEL_LA,
     RS_KIND_PIXEL_RGB,
     RS_KIND_PIXEL_RGBA,
+    RS_KIND_PIXEL_DEPTH,
 };
 
 enum RsSamplerParam {