[xmonad] Two xmonad-contrib patches

Hello, here are two small darcs patches to xmonad-contrib: 1) An XMonad.Actions.MessageFeedback module providing a sendMessage-like action that tells the caller whether the message was actually handled. 2) A (backwards-compatible) patch to XMonad.Layout.LayoutHints that allows specifying where the resized windows should be placed wrt. their original allocated area. I hope I'm doing things the correct way as I don't have much experience with the xmonad development process, darcs, or cooperative development in general. Q. Moser