NamedWindows: if fetchName returns Nothing sets the name to resName ClassHint
NamedWindows: if fetchName returns Nothing sets the name to resName ClassHint

fetchName may return a Nothing if the window's name contains multi byte
characters. In such a case the resName string of the ClassHints of that
window will be used instead.

darcs-hash:20070706130644-32816-eb31c905767927e90b6a8010db2c50334b3e63c4

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