Switched Site and URL values in the makefile; github might effectively
be the homepage now, but it isn't where the released version source is
distributed from.
Updated Source pattern accordingly, to match the release .tgz from the
website
Added a small patch which enables the 0.85 release to build on
mavericks.
I'm not sure if continuing to download from the bitwizard site is desired, but if we want to use the .tar.gz from github it looks like it's going to be harder to make it work.