[gentoo-dev] Patches for distutils.eclass and twisted.eclass

[Arfrever Frehtes Taifersar Arahesis]

The patch for distutils.eclass is divided into 2 subpatches:
Subpatch #1 fixes a typo in a regular expression and removes needless '/' characters.
Subpatch #2 replaces checks for SUPPORT_PYTHON_ABIS variable with more portable calls
to _python_package_supporting_installation_for_multiple_python_abis() function.

The patch for twisted.eclass is divided into 3 subpatches:
Subpatch #1 updates comments, removes inheriting of unused eclass, removes exporting of
twisted_src_test() for packages other than dev-python/twisted* (this function is intended
only for dev-python/twisted*), removes needless MY_VERSION variable and causes that some
variables are set only for dev-python/twisted* (the values of these variables are incorrect
for other packages).
Subpatch #2 removes support for <=dev-python/twisted*-8.2.0 (removed from the tree over
9 months ago) in twisted_src_test(), adds sanity check about package name to twisted_src_test()
and cleans twisted_src_test().
Subpatch #3 fixes some bugs in twisted_pkg_postrm() and twisted_pkg_postinst():
 - Bug #258698:    Addition of support for TWISTED_PLUGINS variable. Default value is "twisted.plugins"
                   for dev-python/twisted* and unset for other packages. This variable will also allow
                   to easily fix bug #329313 (dev-python/axiom, dev-python/mantissa, dev-python/nevow).
                   E.g. dev-python/mantissa will set TWISTED_PLUGINS="axiom.plugins nevow.plugins xmantissa.plugins".
 - Bug #327111:    ImportErrors during uninstallation will be ignored.
 - Unreported bug: dropin.cache files will be created in "${EROOT}" instead of "/".
 - Unreported bug: dropin.cache files of dev-python/axiom, dev-python/mantissa and dev-python/nevow
                   won't be left after uninstallation.
 - Unreported bug: Empty directories won't be left after uninstallation.
 - Unreported bug: Uninstallation won't fail after uninstallation of given version of Python.

I'm plannning to commit these patches in 1 week, or earlier if they are reviewed earlier.

-- 
Arfrever Frehtes Taifersar Arahesis