Rename three header files to free namespace for api.

Change-Id: Ie9ef65a477373c30b2d5b02248f62e768b6f27ae
diff --git a/rsScriptC.h b/rsScriptC.h
index c65a5bf..fc4df51 100644
--- a/rsScriptC.h
+++ b/rsScriptC.h
@@ -19,7 +19,7 @@
 
 #include "rsScript.h"
 
-#include "RenderScriptEnv.h"
+#include "rsEnv.h"
 
 #ifndef ANDROID_RS_SERIALIZE
 #include "bcinfo/BitcodeTranslator.h"