[Xmonad] darcs patch: add descriptions field for Layouts, to allow querying ...

Hi all, This is intended to be used with a XPrompt module for changing layouts, and for a replacement for Select, which won't require the use of the Layout and existentials, and should therefore simplify the code, removing the need for the stupid SerializedLayouts. David Wed Oct 24 07:38:58 PDT 2007 David Roundy * add descriptions field for Layouts, to allow querying what layouts are available.