[gnome-session] Add missing #include <config.h>

[Kjartan Maraas <kmaraas src gnome org>]

commit b9fa0c8c9ff57f704d83dfd1f7b4ae0c19280edf
Author: Kjartan Maraas <kmaraas gnome org>
Date:   Tue Mar 29 11:35:39 2011 +0200

    Add missing #include <config.h>

 capplet/gsp-app.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/capplet/gsp-app.c b/capplet/gsp-app.c
index fe85d80..206ff90 100644
--- a/capplet/gsp-app.c
+++ b/capplet/gsp-app.c
@@ -21,6 +21,10 @@
  *
  */
 
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
 #include <string.h>
 #include <sys/stat.h>