More complete support for named attribs.  Adds user typed attribs as available to programVertex.  Non user attribs are not treated like user for GL2 for simplicity.
diff --git a/libs/rs/rsProgram.h b/libs/rs/rsProgram.h
index dc3a57c..4bb7802 100644
--- a/libs/rs/rsProgram.h
+++ b/libs/rs/rsProgram.h
@@ -42,6 +42,8 @@
     void bindAllocation(Allocation *);
     virtual void createShader();
 
+    bool isUserProgram() const {return mUserShader.size() > 0;}
+
     void bindTexture(uint32_t slot, Allocation *);
     void bindSampler(uint32_t slot, Sampler *);