XSelection.hs: update docs w/r/t unicode
XSelection.hs: update docs w/r/t unicode

see http://code.google.com/p/xmonad/issues/detail?id=348

mathstuf/xmonad-contrib,f1u77y/xmonad-contrib,ohlus/xmonad-contrib,ohlus/xmonad-contrib,mathstuf/xmonad-contrib,0/xmonad-contrib,pjones/xmonad-test,xmonad/xmonad-contrib,0/xmonad-contrib,f1u77y/xmonad-contrib,ohlus/xmonad-contrib,xmonad/xmonad-contrib,CaptainPatate/xmonad-contrib,0/xmonad-contrib,CaptainPatate/xmonad-contrib,mathstuf/xmonad-contrib,CaptainPatate/xmonad-contrib