[gtkmm] gdk_generate_extra_defs.sh: Avoid translation of documentation

[Kjell Ahlstedt <kjellahl src gnome org>]

commit 2caed877fa5eb13f927432e483cb44a55f195aba
Author: Kjell Ahlstedt <kjell ahlstedt bredband net>
Date:   Thu Mar 10 10:33:36 2016 +0100

    gdk_generate_extra_defs.sh: Avoid translation of documentation
    
    Don't let tools/extra_defs_gen/generate_defs_gdk put translated
    documentation into the gdk_signals.defs file.

 tools/gen_scripts/gdk_generate_extra_defs.sh |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/tools/gen_scripts/gdk_generate_extra_defs.sh b/tools/gen_scripts/gdk_generate_extra_defs.sh
index 1553028..d726fdf 100755
--- a/tools/gen_scripts/gdk_generate_extra_defs.sh
+++ b/tools/gen_scripts/gdk_generate_extra_defs.sh
@@ -7,5 +7,6 @@ ROOT_DIR="$(dirname "$0")/../.."
 GEN_DIR="$ROOT_DIR/tools/extra_defs_gen"
 OUT_DIR="$ROOT_DIR/gdk/src"
 
-"$GEN_DIR"/generate_defs_gdk > "$OUT_DIR"/gdk_signals.defs
+# Without LC_ALL=C documentation (docs "xxx") may be translated in the .defs file.
+LC_ALL=C "$GEN_DIR"/generate_defs_gdk > "$OUT_DIR"/gdk_signals.defs