[Xmonad] darcs patch: use the right catch in catchX.

This fixes catchX to now catch all exceptions, rather than only those which arise from a certain class of IO errors. This should be applied along with the two patches I sent previously, and together they ought to handle issue 55. David (who is thankful that is current setup just lets him run without a window manager when xmonad dies, which allows him to fix the code and compile a new one) Thu Oct 11 21:14:50 EDT 2007 David Roundy <droundy@darcs.net> * use the right catch in catchX. Don't ask *me* why the prelude includes a version of catch that is worse than useless (because it lulls you into a feeling of safety).