Generalize Actions.SpawnOn
Generalize Actions.SpawnOn

Ignore-this: 8cfd0a4664ece5d721f52c59d4759a5f

Actions.SpawnOn can now be used to execute arbitrary manage hooks on
the windows spawned by a command(e.g. start a terminal of specific size
or floated).

darcs-hash:20090622183825-7f603-bde3b3838ac61753f9dfa15529e4303ae9f1fd88

jthornber/XMonadContrib,jthornber/XMonadContrib