glsl: move to compiler/

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Acked-by: Matt Turner <mattst88@gmail.com>
Acked-by: Jose Fonseca <jfonseca@vmware.com>
diff --git a/src/Makefile.am b/src/Makefile.am
index a0ec401..9b23cf5 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -25,7 +25,7 @@
 SUBDIRS += compiler
 
 if NEED_OPENGL_COMMON
-SUBDIRS += glsl mesa
+SUBDIRS += mesa
 endif
 
 SUBDIRS += loader