[gentoo-python] [PATCH] distutils-r1.eclass: Reverse order of esetup.py arguments and clarify documentation

[Mike Gilbert]

I ran into some trouble with net-misc/flexget, and it is probably an
issue for other paver-based python packages as well.

Basically, if the build options are passed after the install options,
they are ignored and the default build directory (build/lib) is used
instead. This causes some interesting failures when building in parallel.

An easy workaround is to pass the build command and options before the
install command and options. This requires a small modification to
esetup.py. See attached patch.

This also makes the esetup.py function more flexible in general since it
allows options to be passed both before and after the build command.

The patch also removes a duplicate 'build' command from
distutils-r1_python_compile, which may also cause problems for paver.

I do plan to look into the paver issue further, but I would like to make
this adjustment anyway.