Run.hs: +2 functions, safeSpawn & unsafeSpawn
Run.hs: +2 functions, safeSpawn & unsafeSpawn

See their documentation. This is part of a re-organization of various 'run' commands; this two
make it easier to go through the shell or not, and will be re-used elsewhere.

darcs-hash:20071019181009-f7719-4f4073639389f335080d552c4788667fd109b6f3

jthornber/XMonadContrib,jthornber/XMonadContrib