legend rc patch

One thing I don't seem to be able to do is make the diff

    > pick up the matplotlibrc changes. The following lines need
    > to be added to make this feature useful:

I don't know if I failed to mention this somewhere else or not, but
this is because the rc is now autogenerated by setup.py from the
matplotlibrc.template file. So that is where changes like

### Legend
legend.isaxes : True
legend.numpoints : 4 # the number of points in the legend line
legend.fontsize : 14
legend.pad : 0.2 # the fractional whitespace inside the legend border

should go. I added these and they are no in CVS.