Add a global state localeguard (and one for route templates)

libs/ardour/route.cc

@@ -2704,6 +2704,7 @@ Route::get_template()
 XMLNode&
 Route::state(bool full_state)
 {
+	LocaleGuard lg ();
 	if (!_session._template_state_dir.empty()) {
 		assert (!full_state); // only for templates
 		foreach_processor (sigc::bind (sigc::mem_fun (*this, &Route::set_plugin_state_dir), _session._template_state_dir));

libs/ardour/session_state.cc

@@ -1035,6 +1035,7 @@ Session::get_template()
 XMLNode&
 Session::state (bool full_state)
 {
+	LocaleGuard lg ();
 	XMLNode* node = new XMLNode("Session");
 	XMLNode* child;
 
@@ -1296,6 +1297,7 @@ Session::get_control_protocol_state ()
 int
 Session::set_state (const XMLNode& node, int version)
 {
+	LocaleGuard lg ();
 	XMLNodeList nlist;
 	XMLNode* child;
 	XMLProperty const * prop;