gmime 2.6.20

Closes #27362.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
pyside: install sphinx at build-time to build docs

Also provide an option to skip building docs, though it doesn't
seem to save much time overall and may be removed.

Closes #27228.
Update for Python 3.3.5 release

My first homebrew pull request.
Update with proper SHA1
python3: add 3.3.5 bottle.