Get ready for release 3.9.2

Merge

Merge branch 'python-3.3-to-3.5' into python-3.0-to-3.2

Merge branch 'python-3.0-to-3.2' into python-2.4-to-2.7

Keep pre-toml setup around for a little while

Administrivia

3.0 tolerance

2.x tolerance

Get ready for release 3.9.0

Old egg build tolerance