[xmonad] darcs patch: FocusNth improvements.

Sun Oct 12 12:44:02 EEST 2008 Aleksey Artamonov * FocusNth improvements. In some cases previous version of FocusNth was not very reliable. For example, it's not my cup of tea to press Mod-1 to switch to the last window of the tag with some reflected layout. What's more I wanted not to switch to floating windows or to think them as the last windows at the tag. So the changes are intended to sort it all out.