BUG: Fix numpy.testing.assert_equal in release mode.
BUG: Fix numpy.testing.assert_equal in release mode.

To be complete, the NaT handling needs to raise AssertionError when
comparing NaT's with different types. That check was previously passed
on and the resulting check, which would succeed in development mode
because DeprecationWarning was converted to an error, warns in release
mode.

pdebuyl/numpy,anntzer/numpy,MSeifert04/numpy,abalkin/numpy,tynn/numpy,rgommers/numpy,madphysicist/numpy,ahaldane/numpy,ahaldane/numpy,madphysicist/numpy,pbrod/numpy,WarrenWeckesser/numpy,jakirkham/numpy,mattip/numpy,tynn/numpy,pdebuyl/numpy,seberg/numpy,seberg/numpy,jakirkham/numpy,ahaldane/numpy,charris/numpy,Eric89GXL/numpy,numpy/numpy,Eric89GXL/numpy,grlee77/numpy,mhvk/numpy,anntzer/numpy,pbrod/numpy,mattip/numpy,numpy/numpy,rgommers/numpy,mhvk/numpy,endolith/numpy,pbrod/numpy,pizzathief/numpy,shoyer/numpy,gfyoung/numpy,anntzer/numpy,Eric89GXL/numpy,endolith/numpy,shoyer/numpy,anntzer/numpy,charris/numpy,seberg/numpy,MSeifert04/numpy,simongibbons/numpy,madphysicist/numpy,abalkin/numpy,pizzathief/numpy,grlee77/numpy,mattip/numpy,mhvk/numpy,mhvk/numpy,mattip/numpy,grlee77/numpy,pdebuyl/numpy,gfyoung/numpy,ahaldane/numpy,pizzathief/numpy,shoyer/numpy,simongibbons/numpy,madphysicist/numpy,abalkin/numpy,MSeifert04/numpy,simongibbons/numpy,Eric89GXL/numpy,seberg/numpy,pbrod/numpy,numpy/numpy,tynn/numpy,WarrenWeckesser/numpy,jorisvandenbossche/numpy,WarrenWeckesser/numpy,rgommers/numpy,WarrenWeckesser/numpy,shoyer/numpy,MSeifert04/numpy,gfyoung/numpy,endolith/numpy,endolith/numpy,ahaldane/numpy,shoyer/numpy,jorisvandenbossche/numpy,pizzathief/numpy,pizzathief/numpy,pbrod/numpy,jakirkham/numpy,charris/numpy,numpy/numpy,grlee77/numpy,madphysicist/numpy,simongibbons/numpy,pdebuyl/numpy,mhvk/numpy,charris/numpy,jakirkham/numpy,jorisvandenbossche/numpy,MSeifert04/numpy,WarrenWeckesser/numpy,jakirkham/numpy,jorisvandenbossche/numpy,rgommers/numpy,grlee77/numpy,simongibbons/numpy,jorisvandenbossche/numpy