Merge pull request #1 from matplotlib/master

merge changes from master
Merge pull request #2 from matplotlib/master

merge changes from master
fix homepage url in setup.py
try using distribute
don't use setuptools
add some documentation for o_lon_p, o_lat_p keywords.
Merge branch 'master' of https://github.com/jswhit/basemap
don't assume grid is regular in longitude in addcyclic.
This requires a new kwarg 'cyclic_dimension', which is set to a default
of 360. Addresses part of issue 139.
don't assume grid is regular in addcyclic