Migrate most GL from context to driver.

Change-Id: I5cba3a6e879d2e9332fc667a1061a5312fcf14ba
diff --git a/libs/rs/Android.mk b/libs/rs/Android.mk
index 3362c7d..ea7f477 100644
--- a/libs/rs/Android.mk
+++ b/libs/rs/Android.mk
@@ -117,6 +117,7 @@
 	rsVertexArray.cpp \
 	driver/rsdBcc.cpp \
 	driver/rsdCore.cpp \
+	driver/rsdGL.cpp \
 	driver/rsdProgramRaster.cpp \
 	driver/rsdProgramStore.cpp