Initialize gettext in secret-tool

https://bugzilla.gnome.org/show_bug.cgi?id=680072

tool/Makefile.am

@@ -4,6 +4,7 @@ INCLUDES = \
 	-I$(top_srcdir) \
 	-I$(top_srcdir)/libsecret \
 	-DSECRET_COMPILATION \
+	-DLOCALEDIR=\""$(datadir)/locale"\" \
 	$(NULL)
 
 bin_PROGRAMS = secret-tool

tool/secret-tool.c

@@ -21,6 +21,7 @@
 #include <glib/gi18n.h>
 
 #include <errno.h>
+#include <locale.h>
 #include <limits.h>
 #include <stdlib.h>
 
@@ -336,6 +337,14 @@ main (int argc,
 {
 	SecretToolAction action;
 
+	setlocale (LC_ALL, "");
+
+#ifdef ENABLE_NLS
+	bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
+	bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
+	textdomain (GETTEXT_PACKAGE);
+#endif
+
 	g_type_init ();
 
 	if (argc < 2)