[gnome-system-monitor] mark data/preferences.ui as a glade file in POTFILES.in

[Abderrahim Kitouni <akitouni src gnome org>]

commit a8c4c7580f3cefe8b57d7072227685b293f2fcaa
Author: Abderrahim Kitouni <a kitouni gmail com>
Date:   Sat Mar 17 16:51:56 2012 +0100

    mark data/preferences.ui as a glade file in POTFILES.in
    
    otherwise, intltool won't pick up the strings for translation

 po/POTFILES.in |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 35154c8..3c6b7f3 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -2,7 +2,7 @@
 # List of source files containing translatable strings.
 # Please keep this file sorted alphabetically.
 gnome-system-monitor.desktop.in.in
-data/preferences.ui
+[type: gettext/glade] data/preferences.ui
 src/argv.cpp
 src/argv.h
 src/callbacks.cpp