Gavin Andresen - 2012-12-06 01:01:57

RE: building the .app bundle:

https://github.com/bitcoin/bitcoin/blob/master/contrib/macdeploy/macdeployqtplus
... is python code with lots of useful stuff for building a nice .app (including making a pretty-looking .dmg).
Lots of Qt-specific stuff, too, but it might be a good starting point.