Remove everything related to os x expert package
We decided to no longer ship expert packages for OS X because they're a lot of trouble to keep maintained and confuse users. For those who want a tor on OS X without Vidalia, macports is a fine option. Alternatively, building from source is easy, too. The polipo stuff that is still required for the Vidalia bundle build can now be found in the torbrowser repository, git://git.torproject.org/torbrowser.git.