Fix hang for mouse press on menubar but not on an item (Bug#6499).

* xmenu.c (x_activate_menubar): Send Press/Release for Gtk+ to avoid
grab on just Press (Bug#6499).

src/ChangeLog

+2010-07-03  Jan Djärv  <jan.h.d@swipnet.se>
+
+	* xmenu.c (x_activate_menubar): Send Press/Release for Gtk+ to avoid
+	grab on just Press (Bug#6499).
+
 2010-07-02  Chong Yidong  <cyd@stupidchicken.com>
 	* frame.c (Qtooltip): New var.

src/xmenu.c

@@ -684,6 +684,14 @@ x_activate_menubar (f)
   set_frame_menubar (f, 0, 1);
   BLOCK_INPUT;
 #ifdef USE_GTK
+  /* If we click outside any menu item, the menu bar still grabs.
+     So we send Press and the Release.  If outside, grab is released.
+     If on a menu item, it is popped up normally.
+     PutBack is like a stack, so we put back in reverse order.  */
+  f->output_data.x->saved_menu_event->type = ButtonRelease;
+  XPutBackEvent (f->output_data.x->display_info->display,
+                 f->output_data.x->saved_menu_event);
+  f->output_data.x->saved_menu_event->type = ButtonPress;
   XPutBackEvent (f->output_data.x->display_info->display,
                  f->output_data.x->saved_menu_event);
   popup_activated_flag = 1;