cffi should support void *
lower_assign now supports struct-type Globals
Fix store slice for python2
Fix ufunc test failure on 32 bit platforms
Fix windows test failures
Add tests for storeslice
Unambiguous integer promotion
Remove unused file
added a new submodule to export symbols.
proof of concept export of npymath symbols using a module
populated _npymath_exports. Removed symbol import from numpy.core.umath

This is cleaner and should work on windows.
Update changelog
Fix no argument case for the dispatcher (#403)
Improve disabling of cuda subsystem when cuda is not supported
fix for crashes on windows 64
fix npymath for 32 bit machines
attempt to remove skipif windows for sign tests.
Merge pull request #408 from laserson/add-ffi-voidptr

cffi should support void *
_npymath_exports now builds pointer values using PyLong_FromVoidPtr
Globals checks struct type before number domain types