Implement first pass bitmap to allocation support.  The Java bindings can create a 2D allocation by passing in a Bitmap object.
diff --git a/libs/rs/RenderScript.h b/libs/rs/RenderScript.h
index e1a4b6d..378fccc 100644
--- a/libs/rs/RenderScript.h
+++ b/libs/rs/RenderScript.h
@@ -86,6 +86,7 @@
     RS_ELEMENT_USER_I32,
     RS_ELEMENT_USER_FLOAT, 
 
+    RS_ELEMENT_A_8, 
     RS_ELEMENT_RGB_565, 
     RS_ELEMENT_RGBA_5551, 
     RS_ELEMENT_RGBA_4444,