XMonad.Actions.Search: clean up hasPrefix - dupe of Data.List.isPrefixOf
XMonad.Actions.Search: clean up hasPrefix - dupe of Data.List.isPrefixOf

Ignore-this: 3327a19e5aa23af649ce080fc38a7409

darcs-hash:20090808002120-f7719-150bdb6def1f73e6552c81bd7a64414a8177183b

yzhou61/xmonad-contrib,yzhou61/xmonad-contrib,yzhou61/xmonad-contrib