Add our own check_header, since distutils one is broken.
Add our own check_header, since distutils one is broken.

mattip/numpy,sinhrks/numpy,musically-ut/numpy,nbeaver/numpy,jonathanunderwood/numpy,ChanderG/numpy,stuarteberg/numpy,ekalosak/numpy,rmcgibbo/numpy,andsor/numpy,argriffing/numpy,anntzer/numpy,numpy/numpy-refactor,cowlicks/numpy,kiwifb/numpy,rgommers/numpy,endolith/numpy,felipebetancur/numpy,mingwpy/numpy,dwillmer/numpy,b-carter/numpy,simongibbons/numpy,MichaelAquilina/numpy,tacaswell/numpy,shoyer/numpy,larsmans/numpy,dimasad/numpy,embray/numpy,GaZ3ll3/numpy,trankmichael/numpy,chatcannon/numpy,MSeifert04/numpy,BabeNovelty/numpy,mhvk/numpy,ddasilva/numpy,moreati/numpy,skymanaditya1/numpy,BabeNovelty/numpy,bmorris3/numpy,dimasad/numpy,madphysicist/numpy,kiwifb/numpy,rgommers/numpy,SiccarPoint/numpy,astrofrog/numpy,seberg/numpy,ChanderG/numpy,maniteja123/numpy,tynn/numpy,pelson/numpy,madphysicist/numpy,stefanv/numpy,shoyer/numpy,Anwesh43/numpy,b-carter/numpy,jschueller/numpy,dwf/numpy,madphysicist/numpy,CMartelLML/numpy,pizzathief/numpy,nbeaver/numpy,ogrisel/numpy,WarrenWeckesser/numpy,groutr/numpy,dato-code/numpy,jakirkham/numpy,mattip/numpy,KaelChen/numpy,mwiebe/numpy,Anwesh43/numpy,ekalosak/numpy,MichaelAquilina/numpy,ChanderG/numpy,ekalosak/numpy,tdsmith/numpy,sigma-random/numpy,stefanv/numpy,pbrod/numpy,utke1/numpy,endolith/numpy,rherault-insa/numpy,NextThought/pypy-numpy,GrimDerp/numpy,madphysicist/numpy,numpy/numpy,sinhrks/numpy,MSeifert04/numpy,argriffing/numpy,dch312/numpy,ViralLeadership/numpy,mathdd/numpy,pbrod/numpy,sonnyhu/numpy,ahaldane/numpy,pdebuyl/numpy,dimasad/numpy,ewmoore/numpy,jschueller/numpy,naritta/numpy,ogrisel/numpy,nguyentu1602/numpy,leifdenby/numpy,mingwpy/numpy,bringingheavendown/numpy,ajdawson/numpy,pyparallel/numpy,mhvk/numpy,embray/numpy,matthew-brett/numpy,larsmans/numpy,sinhrks/numpy,MaPePeR/numpy,rhythmsosad/numpy,GaZ3ll3/numpy,empeeu/numpy,KaelChen/numpy,ogrisel/numpy,bmorris3/numpy,jonathanunderwood/numpy,Srisai85/numpy,numpy/numpy,numpy/numpy-refactor,embray/numpy,matthew-brett/numpy,Eric89GXL/numpy,immerrr/numpy,ChristopherHogan/numpy,Srisai85/numpy,njase/numpy,rherault-insa/numpy,jakirkham/numpy,leifdenby/numpy,dwf/numpy,empeeu/numpy,MSeifert04/numpy,dch312/numpy,tacaswell/numpy,jorisvandenbossche/numpy,nguyentu1602/numpy,bertrand-l/numpy,charris/numpy,jorisvandenbossche/numpy,githubmlai/numpy,grlee77/numpy,ahaldane/numpy,tacaswell/numpy,stuarteberg/numpy,Linkid/numpy,joferkington/numpy,moreati/numpy,anntzer/numpy,pbrod/numpy,shoyer/numpy,pdebuyl/numpy,jonathanunderwood/numpy,matthew-brett/numpy,numpy/numpy-refactor,grlee77/numpy,kirillzhuravlev/numpy,Dapid/numpy,chatcannon/numpy,grlee77/numpy,Yusa95/numpy,musically-ut/numpy,utke1/numpy,ESSS/numpy,SiccarPoint/numpy,ssanderson/numpy,tynn/numpy,jorisvandenbossche/numpy,mortada/numpy,rudimeier/numpy,kirillzhuravlev/numpy,astrofrog/numpy,CMartelLML/numpy,dato-code/numpy,grlee77/numpy,njase/numpy,solarjoe/numpy,stuarteberg/numpy,jankoslavic/numpy,ogrisel/numpy,yiakwy/numpy,joferkington/numpy,dimasad/numpy,mathdd/numpy,maniteja123/numpy,simongibbons/numpy,hainm/numpy,SiccarPoint/numpy,astrofrog/numpy,bertrand-l/numpy,nguyentu1602/numpy,githubmlai/numpy,andsor/numpy,tdsmith/numpy,chatcannon/numpy,joferkington/numpy,trankmichael/numpy,Linkid/numpy,dato-code/numpy,bringingheavendown/numpy,pelson/numpy,CMartelLML/numpy,Srisai85/numpy,stefanv/numpy,astrofrog/numpy,ESSS/numpy,maniteja123/numpy,brandon-rhodes/numpy,naritta/numpy,rmcgibbo/numpy,Linkid/numpy,pelson/numpy,MaPePeR/numpy,shoyer/numpy,abalkin/numpy,dwf/numpy,dch312/numpy,AustereCuriosity/numpy,pizzathief/numpy,sonnyhu/numpy,ContinuumIO/numpy,jankoslavic/numpy,BMJHayward/numpy,grlee77/numpy,Anwesh43/numpy,musically-ut/numpy,argriffing/numpy,numpy/numpy-refactor,kirillzhuravlev/numpy,skymanaditya1/numpy,ContinuumIO/numpy,tdsmith/numpy,abalkin/numpy,larsmans/numpy,ewmoore/numpy,bringingheavendown/numpy,mindw/numpy,dwf/numpy,cowlicks/numpy,mingwpy/numpy,has2k1/numpy,jakirkham/numpy,rhythmsosad/numpy,SunghanKim/numpy,jschueller/numpy,ahaldane/numpy,NextThought/pypy-numpy,rudimeier/numpy,mindw/numpy,simongibbons/numpy,rmcgibbo/numpy,mwiebe/numpy,ajdawson/numpy,pyparallel/numpy,ESSS/numpy,mindw/numpy,pizzathief/numpy,GrimDerp/numpy,solarjoe/numpy,gmcastil/numpy,stefanv/numpy,BMJHayward/numpy,groutr/numpy,sonnyhu/numpy,gfyoung/numpy,ekalosak/numpy,immerrr/numpy,pdebuyl/numpy,mortada/numpy,sonnyhu/numpy,pbrod/numpy,numpy/numpy,matthew-brett/numpy,Srisai85/numpy,jschueller/numpy,dwillmer/numpy,yiakwy/numpy,behzadnouri/numpy,Linkid/numpy,Eric89GXL/numpy,shoyer/numpy,abalkin/numpy,has2k1/numpy,mhvk/numpy,b-carter/numpy,rgommers/numpy,trankmichael/numpy,behzadnouri/numpy,jakirkham/numpy,astrofrog/numpy,skwbc/numpy,SunghanKim/numpy,has2k1/numpy,ChristopherHogan/numpy,rudimeier/numpy,seberg/numpy,empeeu/numpy,WillieMaddox/numpy,bmorris3/numpy,CMartelLML/numpy,Eric89GXL/numpy,charris/numpy,drasmuss/numpy,brandon-rhodes/numpy,embray/numpy,ahaldane/numpy,ChristopherHogan/numpy,kirillzhuravlev/numpy,empeeu/numpy,GaZ3ll3/numpy,ChristopherHogan/numpy,rajathkumarmp/numpy,tdsmith/numpy,moreati/numpy,KaelChen/numpy,skymanaditya1/numpy,dwillmer/numpy,rhythmsosad/numpy,tynn/numpy,drasmuss/numpy,mattip/numpy,ContinuumIO/numpy,yiakwy/numpy,hainm/numpy,mathdd/numpy,rgommers/numpy,yiakwy/numpy,mindw/numpy,pdebuyl/numpy,WarrenWeckesser/numpy,jakirkham/numpy,mwiebe/numpy,ahaldane/numpy,WarrenWeckesser/numpy,pelson/numpy,skymanaditya1/numpy,BabeNovelty/numpy,pizzathief/numpy,ajdawson/numpy,seberg/numpy,Yusa95/numpy,naritta/numpy,ssanderson/numpy,GaZ3ll3/numpy,ddasilva/numpy,AustereCuriosity/numpy,trankmichael/numpy,immerrr/numpy,gfyoung/numpy,BabeNovelty/numpy,cjermain/numpy,behzadnouri/numpy,felipebetancur/numpy,anntzer/numpy,nguyentu1602/numpy,BMJHayward/numpy,gmcastil/numpy,KaelChen/numpy,ViralLeadership/numpy,Yusa95/numpy,felipebetancur/numpy,bmorris3/numpy,Dapid/numpy,MSeifert04/numpy,groutr/numpy,sinhrks/numpy,leifdenby/numpy,ChanderG/numpy,stuarteberg/numpy,felipebetancur/numpy,chiffa/numpy,chiffa/numpy,ddasilva/numpy,nbeaver/numpy,bertrand-l/numpy,dch312/numpy,pbrod/numpy,ewmoore/numpy,charris/numpy,naritta/numpy,embray/numpy,mortada/numpy,ViralLeadership/numpy,SunghanKim/numpy,ewmoore/numpy,NextThought/pypy-numpy,brandon-rhodes/numpy,MSeifert04/numpy,andsor/numpy,githubmlai/numpy,Eric89GXL/numpy,cowlicks/numpy,cjermain/numpy,drasmuss/numpy,solarjoe/numpy,githubmlai/numpy,skwbc/numpy,WillieMaddox/numpy,sigma-random/numpy,musically-ut/numpy,simongibbons/numpy,pizzathief/numpy,has2k1/numpy,cjermain/numpy,rajathkumarmp/numpy,Anwesh43/numpy,AustereCuriosity/numpy,brandon-rhodes/numpy,skwbc/numpy,larsmans/numpy,Yusa95/numpy,mhvk/numpy,immerrr/numpy,ssanderson/numpy,matthew-brett/numpy,gmcastil/numpy,numpy/numpy,mingwpy/numpy,rhythmsosad/numpy,dato-code/numpy,mathdd/numpy,mhvk/numpy,sigma-random/numpy,rmcgibbo/numpy,ajdawson/numpy,MaPePeR/numpy,hainm/numpy,MichaelAquilina/numpy,MichaelAquilina/numpy,anntzer/numpy,stefanv/numpy,endolith/numpy,jorisvandenbossche/numpy,pelson/numpy,WillieMaddox/numpy,MaPePeR/numpy,SunghanKim/numpy,WarrenWeckesser/numpy,jankoslavic/numpy,ogrisel/numpy,ewmoore/numpy,SiccarPoint/numpy,rherault-insa/numpy,mortada/numpy,rajathkumarmp/numpy,kiwifb/numpy,simongibbons/numpy,NextThought/pypy-numpy,cjermain/numpy,rudimeier/numpy,charris/numpy,gfyoung/numpy,jankoslavic/numpy,joferkington/numpy,sigma-random/numpy,BMJHayward/numpy,utke1/numpy,hainm/numpy,GrimDerp/numpy,chiffa/numpy,jorisvandenbossche/numpy,pyparallel/numpy,cowlicks/numpy,rajathkumarmp/numpy,mattip/numpy,Dapid/numpy,dwf/numpy,numpy/numpy-refactor,andsor/numpy,madphysicist/numpy,seberg/numpy,endolith/numpy,dwillmer/numpy,GrimDerp/numpy,WarrenWeckesser/numpy,njase/numpy