shell: Initialise locale early

Otherwise glib will make internal calls before setlocale is called:
** (process:1124144): WARNING **: 10:16:58.983: dcgettext("(null)", "", 5) called before setlocale()

 #0  0x00007ffff7c80f77 in g_logv () at /lib64/libglib-2.0.so.0
 #1  0x00007ffff7c81233 in g_log () at /lib64/libglib-2.0.so.0
 #2  0x00007ffff7fbb6c6 in dcgettext (__domainname=<optimized out>, __msgid=0x7ffff7ce6c5a "", __category=<optimized out>) at ../../../../Projects/jhbuild/gettext-pseudolocale/gettext-pseudolocale.c:194
 #3  0x00007ffff7c6478e in _g_dgettext_should_translate () at /lib64/libglib-2.0.so.0
 #4  0x00007ffff7c6484b in g_dgettext () at /lib64/libglib-2.0.so.0
 #5  0x00007ffff7e98974 in g_application_class_intern_init () at /lib64/libgio-2.0.so.0
 #6  0x00007ffff7d9cfb8 in g_type_class_ref () at /lib64/libgobject-2.0.so.0
 #7  0x00007ffff7d9cc95 in g_type_class_ref () at /lib64/libgobject-2.0.so.0
 #8  0x00007ffff7d9cc95 in g_type_class_ref () at /lib64/libgobject-2.0.so.0
 #9  0x00007ffff7d9cc95 in g_type_class_ref () at /lib64/libgobject-2.0.so.0
 #10 0x00007ffff7d8671a in g_object_new_valist () at /lib64/libgobject-2.0.so.0
 #11 0x00007ffff7d867fd in g_object_new () at /lib64/libgobject-2.0.so.0
 #12 0x0000000000449bcc in cc_application_new () at ../../../../Projects/jhbuild/gnome-control-center/shell/cc-application.c:294
 #13 0x0000000000448fa6 in main (argc=1, argv=0x7fffffffd138) at ../../../../Projects/jhbuild/gnome-control-center/shell/main.c:55

shell/main.c

@@ -22,6 +22,7 @@
 #include "config.h"
 
 #include <stdlib.h>
+#include <locale.h>
 #include <glib/gi18n.h>
 #include <gtk/gtk.h>
 
@@ -58,6 +59,8 @@ main (gint    argc,
   bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
   textdomain (GETTEXT_PACKAGE);
 
+  setlocale (LC_ALL, "");
+
   initialize_dependencies (&argc, &argv);
 
   application = cc_application_new ();