BUG: Hang on to originally filled Py_Buffer view.
BUG: Hang on to originally filled Py_Buffer view.

When filling the python buffer view object, python sets
view.shape = &view.len (ndim=1, so this works). If we copy
the view info into our Memoryview object instead of having
it directly filled &view.len points into nirvana.

Closes gh-3175

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