* gnu/packages/python.scm (python-numpy): Update to 1.12.0.
[source]: Use github instead of sourceforge.
[native-inputs]: Add python-cython.
To simplify the handling of dependency cycles (numpy documentation depends
on matplotlib, which depends on numpy), we split out the documentation into
a separate package:
(python-numpy-bootstrap, python2-numpy-bootstrap): Remove variables.
(python-numpy-documentation, python2-numpy-documentation): New variables.
Signed-off-by: Marius Bakke <mbakke@fastmail.com>