matplotlib/basemap — pull request #116 by efiring (2013-07-09 02:30:19+00:00)
Title: Make basemap work with mpl 1.4 egg directory as generated by setuptools

Starting in version 1.4, mpl is installing mpl_toolkits inside
its egg. To work with that, basemap needs to declare mpl_toolkits
as a namespace package, and put a suitable __init__.py in it.