Remove remaining 2.2-isms:

Remove remaining 2.2-isms:
+ Lib/site-packages wasn't created on Windows in 2.1.
+ The compiler package lived in Tools instead of in Lib.

After this, a directory compare of an installed 2.1.1 and an installation
created by this installer "are close".  The remaining differences have to
do with files that the old installer mistakenly never knew existed (like
the distutils README, and pynche's color-name files).  All such cases in
2.1.1 were bugs, now repaired in 2.1.2.