Merge git://repo.or.cz/git-gui

* git://repo.or.cz/git-gui:
  git-gui: Fix the search bar destruction handler.
  Update the po template
  git-gui: Implement automatic rescan after Tool execution.
  git-gui: Allow Tools request arguments from the user.
  git-gui: Add a Tools menu for arbitrary commands.
  git-gui: Fix the after callback execution in rescan.
  git-gui: Implement system-wide configuration handling.
  git-gui: try to provide a window icon under X

git-gui/lib/search.tcl

@@ -35,7 +35,7 @@ constructor new {i_w i_text args} {
 
 	trace add variable searchstring write [cb _incrsearch_cb]
 	
-	bind $w <Destroy> [cb delete_this]
+	bind $w <Destroy> [list delete_this $this]
 	return $this
 }