[gimp] add missing file to po/POTFILES.in to fix 'make check'

[Nils Philippsen <nphilipp src gnome org>]

commit 8f0d1052763a6fd53c031dd99843105f5675bb45
Author: Nils Philippsen <nils redhat com>
Date:   Tue Jun 4 16:06:28 2013 +0200

    add missing file to po/POTFILES.in to fix 'make check'

 po/POTFILES.in |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/po/POTFILES.in b/po/POTFILES.in
index bccc91c..af8f131 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -326,6 +326,7 @@ app/tools/gimpbucketfilltool.c
 app/tools/gimpbycolorselecttool.c
 app/tools/gimpcageoptions.c
 app/tools/gimpcagetool.c
+app/tools/gimpcloneoptions-gui.c
 app/tools/gimpclonetool.c
 app/tools/gimpcolorbalancetool.c
 app/tools/gimpcolorizetool.c