#7 uname patch for setup.py with windows

[OvermindDL1]

Patch for setup.py to put the windows test after the
uname test. Just a little change, but all of my
windows machines have the gnu-tools set, which include
uname, so may as well use it. Included is the patch
file, pasted below this is the changed function itself
(the patch does not include my comments. You may even
want to refer Windows users to the useful gnu-tools on
sourceforge in your readme.

[OvermindDL1]

setup.py patch file

[Armin Rigo]

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Did you test the patch with no 'uname' in your path?
I'm afraid of the confusing error message that we get
when os.popen-ing it then.

[OvermindDL1]

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Yes, I removed the uname from my path, deleted the psyco
build directory, and it still worked, sorry for not
mentioning that earlier. Although I only tested on Windows,
it should work identically as before on other systems as the
only they did before that, that they did not do now is test
if the system platform starts with "win". The reason I did
this, although it worked before, is that windows can be a
64-bit installation now, and thus would not work with psyco
currently. Therefore, if the user is savvy enough to have
the gnu-tools for windows installed, then psyco will get the
right info, seeing that the system is 64-bit instead of just
seeing the bulk 'windows', and not installing, instead of
failing during compile, or worse, compiling but not working
properly.