forward port 2.X changes up to and including rev 6842

git-svn-id: svn://localhost/ardour2/branches/3.0@7637 d708f5d6-7413-0410-9779-e7cbd77b26cf

gtk2_ardour/main.cc

@@ -39,6 +39,7 @@
 #include "ardour/filesystem_paths.h"
 
 #include <gtkmm/main.h>
+#include <gtkmm2ext/application.h>
 #include <gtkmm2ext/popup.h>
 #include <gtkmm2ext/utils.h>
 
@@ -439,6 +440,7 @@ int main (int argc, char *argv[])
 	}
 
 	ui->run (text_receiver);
+        Gtkmm2ext::Application::instance()->cleanup();
 	ui = 0;
 
 	ARDOUR::cleanup ();