py3_5 is slowly being removed from ::gentoo
it seems sensible to do the same here
also fixed:
* DISTUTILS_USE_SETUPTOOLS value is probably incorrect
* value: DISTUTILS_USE_SETUPTOOLS=rdepend
* expected: DISTUTILS_USE_SETUPTOOLS=bdepend
Package-Manager: Portage-2.3.93, Repoman-2.3.20
Signed-off-by: Andrew Ammerlaan <andrewammerlaan@riseup.net>