First round of prepping setuptools for inclusion in Python 2.5: move
site.py to setuptools/site-patch.py; reinstate 'python -m easy_install'
support; use distutils' "upload" command when running under 2.5.

--HG--
branch : distribute
rename : site.py => setuptools/site-patch.py
extra : source : fbb6c89a74aa47a556a936202d2e50051b067940
extra : histedit_source : 2cce1db2df647a17f6ce37a555207354ed7077f7