dev-python/docutils: major improvements.

dev-python/docutils: major improvements.

This commit:
* bumps EAPI.
* fixes EPYTHON.
* removes python3.3.
* removes version 0.10 and version 0.9.1-r1.
* revision-bumps to version 0.12-r1.
* fixes testing: testing was broken both for CPython and PyPy, it was solved
by two patches. One is from upstream, the other has been submitted to upstream.

Upstream submission: https://sourceforge.net/p/docutils/patches/136/

Gentoo-Bug: https://bugs.gentoo.org/452792
Gentoo-Bug: https://bugs.gentoo.org/451830
Gentoo-Bug: https://bugs.gentoo.org/529930
Gentoo-Bug: https://bugs.gentoo.org/593754

Courtesy of Mathy Vanvoorden <mathy@vanvoorden.be>.

Package-Manager: portage-2.3.0
Closes: https://github.com/gentoo/gentoo/pull/2600
Signed-off-by: Patrice Clement <monsieurp@gentoo.org>