1) generate matplotlibrc with almost everything commented
> out by default
Hopefully, this will address the problem of all the deprecated rc
warnings people are getting, which is confusing to new users.
> 2) eliminate matplotlibrc.template by having setup.py
> autogenerate matplotlibrc based on the rcParams-related code
> that is presently in __init__.py.
working code tested across platforms and python versions settles this.
It is mostly working now, but Norbert brings up a good point that if
we now go to mostly empty rc files, it will become increasingly
unlikely that the template gets out of whack. If this is important to
someone and they can come up with a good implementation, I don't have
a problem with it.