Only put demands-attention windows into alt-tab if of appropriate type

Windows demanding attention should never appear in the alt-tab list
unless they're of a type which might have appeared there anyway. This
solves a problem under AWN where docks which were marked as demanding
attention appeared in all alt-tab lists; they were irrelevant and it
was impossible to remove them from the lists.

svn path=/trunk/; revision=4123

src/core/display.c

@@ -4564,7 +4564,8 @@ meta_display_get_tab_list (MetaDisplay   *display,
 
         /* Check to see if it demands attention */
         if (l_window->wm_state_demands_attention && 
-            l_window->workspace!=workspace) 
+            l_window->workspace!=workspace &&
+            IN_TAB_CHAIN (l_window, type)) 
           {
             /* if it does, add it to the popup */
             tab_list = g_list_prepend (tab_list, l_window);