[Python-Dev] windows 2.5 build: use OpenSSL for hashlib [bug 1535502]

[Anthony Baxter]

I'm nervous about this change being made at this stage of the release process. 
It seems to me to have a chance of causing breakages - admittedly a small 
chance, but one that's higher than I'd like.

I'd also like to make sure that the PCBuild8 directory is updated at the same 
time - with the recent disappearance of the previous free MS compiler 
version, I think this will become more important over the 18 months or so of 
Python 2.5's life.

Anthony