[Python-3000] py3k patches for Windows

[Amaury Forgeot d'Arc]

Hello,

I recently created patches that correct some problems in py3k on Windows.
They are:

- http://bugs.python.org/issue1029 io.StringIO used to transform \n into \r\n.
This problem must be fixed, if you want the stdout comparisons and
doctests to succeed.

- http://bugs.python.org/issue1047 converts PC/subprocess.c to full
Unicode (no more PyString...) and test_subprocess passes without a
change.

- http://bugs.python.org/issue1048 corrects a bogus %zd format used
somewhere by test_float, and prevents a crash...

- http://bugs.python.org/issue1050 prevents test_marshal from crashing
on debug builds where vc8 seems to insert additional items on the
stack: reduce the recursion level.

Would someone want to review (and discuss) them and apply to the branch?
Tonight I plan to have a list of the remaining failing tests (before
the buildbots ;-) )
and maybe propose corrections for some of those...

-- 
Amaury Forgeot d'Arc