[gimp] app: Use BUILT_SOURCES to make sure generated files are created first.

[Michael Henning <mhenning src gnome org>]

commit 3712a8df3eef407edf7f57c758ec037f8c0b57a6
Author: Michael Henning <drawoc darkrefraction com>
Date:   Sun Jul 21 21:26:17 2013 -0400

    app: Use BUILT_SOURCES to make sure generated files are created first.

 app/gui/Makefile.am |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/app/gui/Makefile.am b/app/gui/Makefile.am
index b5ea072..6717b3a 100644
--- a/app/gui/Makefile.am
+++ b/app/gui/Makefile.am
@@ -46,6 +46,8 @@ libappgui_a_built_sources = \
 
 libappgui_a_SOURCES = $(libappgui_a_built_sources) $(libappgui_a_sources)
 
+BUILT_SOURCES = $(libappgui_a_built_sources)
+
 EXTRA_DIST = \
        dbus-service.xml