matplotlib variant use MacOSX backend

[Faisal Moledina]

> How does one make py26-matplotlib @1.0.0 use
> backend      : MacOSX
>
> other than changing the file:
> /opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/matplotlib/mpl-data/matplotlibrc

You can set that in ~/.matplotlib/matplotlibrc I believe.

Faisal