mesa: Prefix main includes with dir to avoid conflicts.
Some of the headers in src/mesa/main have pretty common names which
easily conflict with third-party code, e.g. config.h
diff --git a/src/mesa/shader/prog_parameter.c b/src/mesa/shader/prog_parameter.c
index d87e8f6..e0d2096 100644
--- a/src/mesa/shader/prog_parameter.c
+++ b/src/mesa/shader/prog_parameter.c
@@ -29,9 +29,9 @@
*/
-#include "glheader.h"
-#include "imports.h"
-#include "macros.h"
+#include "main/glheader.h"
+#include "main/imports.h"
+#include "main/macros.h"
#include "prog_instruction.h"
#include "prog_parameter.h"
#include "prog_statevars.h"