use fast test environment for setuptools and distribute
simplify sitecustomize tests
reset_env tests
better debugging for sitecustomize test
get-pip.py: accept cli flags
get-pip.py: rebuild
more debugging for sitecustomize patch test
delete __pycache__ after sitecustomize updates
Merge pull request #893 from qwcode/fast_tests

use "fast" test environment for setuptools and distribute
Merge pull request #895 from g2p/develop

get-pip.py: ssl and --user support
Use quoted-printable as the inner encoding.

This compresses a lot more efficiently (get-pip.py.gz is within 12% of tar czf).
get-pip.py: rebuild

quoted-printable is a size gain of about 30%, before or after gzipping.