BUG: spatial/qhull: cherry-pick previous qhull fixes
BUG: spatial/qhull: cherry-pick previous qhull fixes

bb4c46fa BUG: spatial/qhull: fix compilation on Intel compilers

The other fixes were already incorporated upstream:

666f6ad2 BUG: spatial/qhull: define ptr_intT correctly in Qhull
e089c85c MAINT: fix some build warnings.  Closes ticket 1528.

pnedunuri/scipy,futurulus/scipy,matthew-brett/scipy,fredrikw/scipy,maciejkula/scipy,pschella/scipy,arokem/scipy,vhaasteren/scipy,nvoron23/scipy,befelix/scipy,jseabold/scipy,fernand/scipy,FRidh/scipy,tylerjereddy/scipy,Shaswat27/scipy,behzadnouri/scipy,vanpact/scipy,sauliusl/scipy,richardotis/scipy,Stefan-Endres/scipy,hainm/scipy,zaxliu/scipy,njwilson23/scipy,befelix/scipy,nonhermitian/scipy,grlee77/scipy,andyfaff/scipy,zerothi/scipy,njwilson23/scipy,vigna/scipy,niknow/scipy,gef756/scipy,pnedunuri/scipy,niknow/scipy,petebachant/scipy,perimosocordiae/scipy,hainm/scipy,trankmichael/scipy,nmayorov/scipy,ChanderG/scipy,nvoron23/scipy,juliantaylor/scipy,pschella/scipy,ndchorley/scipy,rmcgibbo/scipy,sriki18/scipy,witcxc/scipy,maniteja123/scipy,person142/scipy,grlee77/scipy,ilayn/scipy,Dapid/scipy,bkendzior/scipy,aarchiba/scipy,zerothi/scipy,lukauskas/scipy,apbard/scipy,josephcslater/scipy,mortonjt/scipy,efiring/scipy,Kamp9/scipy,FRidh/scipy,petebachant/scipy,cpaulik/scipy,ales-erjavec/scipy,jjhelmus/scipy,andim/scipy,ogrisel/scipy,piyush0609/scipy,matthewalbani/scipy,newemailjdm/scipy,mortada/scipy,pyramania/scipy,jamestwebber/scipy,jonycgn/scipy,mikebenfield/scipy,maniteja123/scipy,felipebetancur/scipy,mhogg/scipy,raoulbq/scipy,pizzathief/scipy,cpaulik/scipy,zaxliu/scipy,mdhaber/scipy,andyfaff/scipy,efiring/scipy,mingwpy/scipy,vanpact/scipy,nvoron23/scipy,woodscn/scipy,argriffing/scipy,petebachant/scipy,andim/scipy,mgaitan/scipy,chatcannon/scipy,vberaudi/scipy,vhaasteren/scipy,zaxliu/scipy,scipy/scipy,Kamp9/scipy,mgaitan/scipy,hainm/scipy,petebachant/scipy,zxsted/scipy,piyush0609/scipy,argriffing/scipy,sriki18/scipy,matthew-brett/scipy,maniteja123/scipy,pbrod/scipy,Newman101/scipy,rgommers/scipy,newemailjdm/scipy,mortada/scipy,vigna/scipy,Stefan-Endres/scipy,sriki18/scipy,piyush0609/scipy,woodscn/scipy,fernand/scipy,petebachant/scipy,mortada/scipy,kalvdans/scipy,endolith/scipy,Gillu13/scipy,sauliusl/scipy,Kamp9/scipy,jseabold/scipy,ales-erjavec/scipy,witcxc/scipy,jseabold/scipy,jseabold/scipy,dch312/scipy,gdooper/scipy,mingwpy/scipy,aeklant/scipy,argriffing/scipy,hainm/scipy,endolith/scipy,pnedunuri/scipy,juliantaylor/scipy,efiring/scipy,jamestwebber/scipy,arokem/scipy,WillieMaddox/scipy,ales-erjavec/scipy,aeklant/scipy,maniteja123/scipy,Kamp9/scipy,ortylp/scipy,ortylp/scipy,piyush0609/scipy,trankmichael/scipy,josephcslater/scipy,person142/scipy,rgommers/scipy,minhlongdo/scipy,hainm/scipy,fredrikw/scipy,larsmans/scipy,mortonjt/scipy,mhogg/scipy,piyush0609/scipy,cpaulik/scipy,rmcgibbo/scipy,mortonjt/scipy,ogrisel/scipy,anntzer/scipy,jor-/scipy,mgaitan/scipy,mingwpy/scipy,kalvdans/scipy,pizzathief/scipy,cpaulik/scipy,scipy/scipy,mdhaber/scipy,pnedunuri/scipy,pbrod/scipy,gfyoung/scipy,sargas/scipy,ilayn/scipy,jsilter/scipy,mdhaber/scipy,fernand/scipy,dominicelse/scipy,fredrikw/scipy,gef756/scipy,endolith/scipy,sauliusl/scipy,haudren/scipy,vberaudi/scipy,anielsen001/scipy,jonycgn/scipy,sonnyhu/scipy,ortylp/scipy,minhlongdo/scipy,apbard/scipy,mingwpy/scipy,anntzer/scipy,pbrod/scipy,nonhermitian/scipy,njwilson23/scipy,andyfaff/scipy,pschella/scipy,matthewalbani/scipy,felipebetancur/scipy,Srisai85/scipy,sargas/scipy,gef756/scipy,zxsted/scipy,trankmichael/scipy,raoulbq/scipy,Srisai85/scipy,richardotis/scipy,pyramania/scipy,scipy/scipy,Srisai85/scipy,vhaasteren/scipy,apbard/scipy,gef756/scipy,pizzathief/scipy,aman-iitj/scipy,felipebetancur/scipy,Gillu13/scipy,jamestwebber/scipy,aman-iitj/scipy,Shaswat27/scipy,andim/scipy,sonnyhu/scipy,mikebenfield/scipy,dch312/scipy,kleskjr/scipy,nmayorov/scipy,behzadnouri/scipy,ilayn/scipy,aman-iitj/scipy,niknow/scipy,sonnyhu/scipy,juliantaylor/scipy,anielsen001/scipy,Srisai85/scipy,larsmans/scipy,zxsted/scipy,FRidh/scipy,gdooper/scipy,matthewalbani/scipy,njwilson23/scipy,surhudm/scipy,andim/scipy,person142/scipy,jakevdp/scipy,sargas/scipy,ChanderG/scipy,zxsted/scipy,anntzer/scipy,pbrod/scipy,lhilt/scipy,arokem/scipy,haudren/scipy,aeklant/scipy,WarrenWeckesser/scipy,zaxliu/scipy,ndchorley/scipy,Shaswat27/scipy,felipebetancur/scipy,e-q/scipy,argriffing/scipy,WillieMaddox/scipy,Srisai85/scipy,behzadnouri/scipy,Kamp9/scipy,ogrisel/scipy,nvoron23/scipy,raoulbq/scipy,woodscn/scipy,larsmans/scipy,gef756/scipy,pyramania/scipy,chatcannon/scipy,surhudm/scipy,felipebetancur/scipy,dch312/scipy,Newman101/scipy,woodscn/scipy,aman-iitj/scipy,jor-/scipy,jsilter/scipy,mdhaber/scipy,mortada/scipy,mhogg/scipy,efiring/scipy,dominicelse/scipy,jonycgn/scipy,mgaitan/scipy,fredrikw/scipy,richardotis/scipy,zaxliu/scipy,Shaswat27/scipy,vberaudi/scipy,tylerjereddy/scipy,mortada/scipy,anielsen001/scipy,perimosocordiae/scipy,minhlongdo/scipy,witcxc/scipy,apbard/scipy,gertingold/scipy,aman-iitj/scipy,argriffing/scipy,anielsen001/scipy,ilayn/scipy,andyfaff/scipy,Dapid/scipy,WarrenWeckesser/scipy,fernand/scipy,jsilter/scipy,jakevdp/scipy,gertingold/scipy,maciejkula/scipy,grlee77/scipy,aman-iitj/scipy,surhudm/scipy,nmayorov/scipy,larsmans/scipy,pbrod/scipy,bkendzior/scipy,cpaulik/scipy,matthew-brett/scipy,andim/scipy,larsmans/scipy,witcxc/scipy,befelix/scipy,Kamp9/scipy,rmcgibbo/scipy,pyramania/scipy,gfyoung/scipy,sauliusl/scipy,anntzer/scipy,jor-/scipy,nonhermitian/scipy,njwilson23/scipy,nvoron23/scipy,sonnyhu/scipy,ChanderG/scipy,ndchorley/scipy,giorgiop/scipy,zxsted/scipy,njwilson23/scipy,Gillu13/scipy,nonhermitian/scipy,dominicelse/scipy,bkendzior/scipy,bkendzior/scipy,WarrenWeckesser/scipy,aeklant/scipy,haudren/scipy,futurulus/scipy,pnedunuri/scipy,gef756/scipy,witcxc/scipy,ogrisel/scipy,sriki18/scipy,behzadnouri/scipy,dch312/scipy,WillieMaddox/scipy,chatcannon/scipy,jjhelmus/scipy,Stefan-Endres/scipy,giorgiop/scipy,ChanderG/scipy,perimosocordiae/scipy,Stefan-Endres/scipy,mikebenfield/scipy,lhilt/scipy,e-q/scipy,vanpact/scipy,zxsted/scipy,juliantaylor/scipy,ChanderG/scipy,jamestwebber/scipy,gdooper/scipy,giorgiop/scipy,anielsen001/scipy,arokem/scipy,hainm/scipy,larsmans/scipy,anntzer/scipy,grlee77/scipy,mortonjt/scipy,e-q/scipy,kalvdans/scipy,gdooper/scipy,minhlongdo/scipy,mingwpy/scipy,Eric89GXL/scipy,mtrbean/scipy,niknow/scipy,lhilt/scipy,rgommers/scipy,mikebenfield/scipy,sargas/scipy,trankmichael/scipy,ortylp/scipy,ndchorley/scipy,tylerjereddy/scipy,gertingold/scipy,lhilt/scipy,WillieMaddox/scipy,mhogg/scipy,ortylp/scipy,aarchiba/scipy,mgaitan/scipy,kleskjr/scipy,endolith/scipy,haudren/scipy,richardotis/scipy,haudren/scipy,scipy/scipy,mdhaber/scipy,minhlongdo/scipy,andyfaff/scipy,Newman101/scipy,newemailjdm/scipy,rmcgibbo/scipy,mtrbean/scipy,Newman101/scipy,vberaudi/scipy,jonycgn/scipy,jseabold/scipy,behzadnouri/scipy,pnedunuri/scipy,FRidh/scipy,efiring/scipy,futurulus/scipy,sriki18/scipy,jonycgn/scipy,aarchiba/scipy,andim/scipy,maniteja123/scipy,vberaudi/scipy,rmcgibbo/scipy,Eric89GXL/scipy,Dapid/scipy,pschella/scipy,sargas/scipy,pizzathief/scipy,zerothi/scipy,lukauskas/scipy,chatcannon/scipy,richardotis/scipy,scipy/scipy,josephcslater/scipy,mtrbean/scipy,zerothi/scipy,perimosocordiae/scipy,WarrenWeckesser/scipy,mikebenfield/scipy,jjhelmus/scipy,rgommers/scipy,ilayn/scipy,trankmichael/scipy,Dapid/scipy,maciejkula/scipy,kleskjr/scipy,mhogg/scipy,mtrbean/scipy,zerothi/scipy,gfyoung/scipy,pizzathief/scipy,maciejkula/scipy,raoulbq/scipy,maniteja123/scipy,Newman101/scipy,WillieMaddox/scipy,Eric89GXL/scipy,giorgiop/scipy,jor-/scipy,ndchorley/scipy,sonnyhu/scipy,ogrisel/scipy,lukauskas/scipy,endolith/scipy,rmcgibbo/scipy,tylerjereddy/scipy,haudren/scipy,jakevdp/scipy,vanpact/scipy,mtrbean/scipy,vigna/scipy,dch312/scipy,aarchiba/scipy,sauliusl/scipy,mhogg/scipy,woodscn/scipy,WillieMaddox/scipy,pbrod/scipy,gfyoung/scipy,sonnyhu/scipy,vanpact/scipy,mortonjt/scipy,niknow/scipy,mtrbean/scipy,zaxliu/scipy,kalvdans/scipy,Eric89GXL/scipy,Srisai85/scipy,endolith/scipy,ales-erjavec/scipy,Shaswat27/scipy,mortada/scipy,Gillu13/scipy,felipebetancur/scipy,surhudm/scipy,matthew-brett/scipy,andyfaff/scipy,josephcslater/scipy,fernand/scipy,e-q/scipy,Stefan-Endres/scipy,fernand/scipy,lukauskas/scipy,nvoron23/scipy,gfyoung/scipy,ndchorley/scipy,WarrenWeckesser/scipy,chatcannon/scipy,vhaasteren/scipy,matthewalbani/scipy,mgaitan/scipy,nmayorov/scipy,dominicelse/scipy,juliantaylor/scipy,newemailjdm/scipy,giorgiop/scipy,apbard/scipy,Gillu13/scipy,matthew-brett/scipy,raoulbq/scipy,fredrikw/scipy,aarchiba/scipy,lukauskas/scipy,newemailjdm/scipy,richardotis/scipy,nonhermitian/scipy,futurulus/scipy,jakevdp/scipy,argriffing/scipy,sauliusl/scipy,surhudm/scipy,jseabold/scipy,lhilt/scipy,ales-erjavec/scipy,vigna/scipy,petebachant/scipy,cpaulik/scipy,FRidh/scipy,vberaudi/scipy,aeklant/scipy,matthewalbani/scipy,scipy/scipy,piyush0609/scipy,newemailjdm/scipy,arokem/scipy,chatcannon/scipy,kalvdans/scipy,Dapid/scipy,maciejkula/scipy,raoulbq/scipy,jjhelmus/scipy,anielsen001/scipy,fredrikw/scipy,dominicelse/scipy,Gillu13/scipy,Eric89GXL/scipy,efiring/scipy,surhudm/scipy,Dapid/scipy,vhaasteren/scipy,befelix/scipy,vigna/scipy,person142/scipy,jsilter/scipy,vanpact/scipy,futurulus/scipy,woodscn/scipy,josephcslater/scipy,pschella/scipy,mingwpy/scipy,jor-/scipy,jjhelmus/scipy,pyramania/scipy,Eric89GXL/scipy,kleskjr/scipy,Shaswat27/scipy,ales-erjavec/scipy,gdooper/scipy,jakevdp/scipy,Stefan-Endres/scipy,grlee77/scipy,kleskjr/scipy,jsilter/scipy,futurulus/scipy,perimosocordiae/scipy,mortonjt/scipy,FRidh/scipy,rgommers/scipy,gertingold/scipy,befelix/scipy,bkendzior/scipy,person142/scipy,minhlongdo/scipy,anntzer/scipy,trankmichael/scipy,kleskjr/scipy,jonycgn/scipy,lukauskas/scipy,jamestwebber/scipy,ChanderG/scipy,ilayn/scipy,sriki18/scipy,nmayorov/scipy,vhaasteren/scipy,Newman101/scipy,tylerjereddy/scipy,WarrenWeckesser/scipy,niknow/scipy,perimosocordiae/scipy,giorgiop/scipy,zerothi/scipy,e-q/scipy,behzadnouri/scipy,gertingold/scipy,mdhaber/scipy,ortylp/scipy