hooks: extract a separate _hook_environment from handle_git_receive We want to split handle_git_receive up, and this self-contained chunk is what will be shared. Just moving code - not changing comments or anything.

Babel >= 0.9.6, < 2.4
waitress >= 0.8.8, < 1.0
pytest >= 3.3.0, < 4
pytest-runner
pytest-sugar >= 0.7.0
pytest-benchmark
pytest-localserver
mock
Sphinx
WebTest < 3