[Xmonad] darcs patch: XPrompt: fixes a couple of bugs (and 1 more)

Hi, a couple of patches related to XPrompt: 2 bug fixes and some other minor stuff. ciao andrea ps: I changes my smtp relay host. Hope this solves my mailing issues. Sat Aug 4 11:08:17 CEST 2007 Andrea Rossato * XPrompt: fixes a couple of bugs - we run the action passed to mkXPrompt only if we have a command; - updateWindows must call destroyComplWin if there are no completions; - some comments (more to come) - a shorthand in keyPressHandle - removed all warnings Sat Aug 4 11:30:49 CEST 2007 Andrea Rossato * MetaModule: added XPrompt and others XPrompt, XMonadPrompt, SshPrompt. ShellPrompt is commented out since it requires readline and the related xmonad.cabal modifications.