[python-win32] Oldest Python version for pywin32?

[Tim Golden]

Really addressed to Mark / Roger, but in case anyone else wants to chip 
in anyway..

What's the oldest Python version still supported by pywin32? I ask 
because I'm slightly tweaking the [somewhat gnarly] hunt-the-SDK code in 
setup.py, and I don't want to introduce something which won't build on 
an older version.

FWIW the changes I'm talking about are here:

https://bitbucket.org/TJG/pywin32/commits/227e8c794af76512832e5f79f8544c4a1e96915b

TJG