MagicFocus: reimplement as a LayoutModifier, fix bug (MagicFocus didn't pass on messages to underlying layouts)
MagicFocus: reimplement as a LayoutModifier, fix bug (MagicFocus didn't pass on messages to underlying layouts)

darcs-hash:20080317193008-bd4d7-4f1114ab301cc0dc28c44cc7c7218f7792d18ce2

kmels/xmonad-launcher,kmels/xmonad-launcher