BUG: use PyOS_string_to_double on Python 2.7
BUG: use PyOS_string_to_double on Python 2.7

Related to #1345.  This works around PyOS_ascii_strtod raising a
PendingDeprecationWarning when GIL is released, which results to a
crash.

The full fix would be to re-acquire GIL, but I believe we will not want
to do that for performance reasons, as it doesn't otherwise seem to be
necessary.

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