Add X.A.DynamicWorkspaces.renameWorkspaceByName.
Add X.A.DynamicWorkspaces.renameWorkspaceByName.

Ignore-this: 4b8aa0405de3969000b1a78eb12992

darcs-hash:20121227063531-7d114-cf51e681da21447cc691be41d313e22fb6337f38

jthornber/XMonadContrib,jthornber/XMonadContrib