Message 64828 - Python tracker

Hi Marc-Andre,
  The PCBuild/README.txt file has some info about compatibility with VS
versions (but probably needs to say more about x64 builds).  There is
also talk about releasing "Profile Guided Optimization" built binaries,
which does require a professional version.  I believe, but am not sure,
that Martin uses the professional versions to make the official
binaries.  Either way, this might be getting off-topic for this patch.