Mostly a bug-fix release, and there were quite a few of those.

This was built with XCode 3.2.6 on MacOS 10.6.7, so the executables should all work on PPC, i386 and x86_64 all the way back to 10.4.0.

However, this may end up being the last release with PPC support, since XCode 4.x conspires to make it difficult to continue to build those, and I'm going to have to upgrade eventually. So get it while it's hot.