Message 160241 - Python tracker

The tip of the vs2010 branch now works just as well as default does. There are no outstanding test failures that aren't seen on default -- test_email still fails for some line ending stuff, but that's not relevant here.

Attached is a patch showing just the code changes, including Kristjan's SXS patch, support in Tools\msi\msi.py for VS2010, and a few small distutils and packaging version adjustments to work with VS2010.