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* Updated package to work with Mac OS 10.6 (Snow Leopard), which ships with
Python 2.6.1
* Uses readline.c from Python 2.6.1 release
* Backported "spurious trailing space" bugfix from Python svn trunk (see e.g.
https://bugs.launchpad.net/python/+bug/470824 for details on bug)
* Updated to build against readline 6.0 (patch-level 4)
* Now builds successfully on Linux (removed Mac-specific flags in this case),
and still supports Mac OS 10.4 and 10.5