Implement basic allocation readback.  Add Get height, width to ScriptC_Lib.
diff --git a/rs.spec b/rs.spec
index b644833..7dbf412 100644
--- a/rs.spec
+++ b/rs.spec
@@ -155,6 +155,10 @@
 	param const void *data
 	}
 
+AllocationRead {
+	param RsAllocation va
+	param void * data
+	}
 
 Adapter1DCreate {
 	ret RsAdapter1D