Do not warn about unknown ClientMessageEvents
Do not warn about unknown ClientMessageEvents

Ignore-this: d02940888cd54cf209d6e5f4847548ab
Not all client messages are are meant to be handled by the wndow manager, so do
not complain when one is unknown.

darcs-hash:20090812222917-23c07-105d12c2d48165f574345695c13a802b2adb1b4c

kmels/xmonad-launcher,kmels/xmonad-launcher