Restoring mis-placed comment, added comment for PPC64LE specific permission fix and reduced number of jobs for the same platform.

Restore pythonlib support on older Pythons.

In distutils hack, use absolute import rather than relative to avoid bpo-30876.

Add Python 3.10 support to _distutils_hack

Get the 'Loader' abstract class from importlib.abc rather than
importlib.util.abc (alias removed in Python 3.10).

Supply a copy of _optim_args_from_interpreter_flags for Python 3.5 compatibility. Ref pypa/setuptools#2357.

Re-enable distutils patch by default.

Resolving error text issue (#2302)

# Conflicts:
#	setuptools/msvc.py

Remove legacy Python 2 code