MRG: refactoring setup.py to fix sdist etc #377
Merged
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python setup.py sdist was broken, because I wasn't adding some files to the
MANIFEST.in, and because I wasn't correctly using the numpy build_py command.
In other news, it was annoying to have to install sympy etc to run python
setup.py egg_info, which was in turn required when installing via pip - see
gh-320.
Fix both of these by dropping checks for Mayavi and Cython, dropping
nibabel/nisext dependency (by copying code and refactoring), and letting
setuptools take care of dependency checking for missing packages.