Ensure that weave output directory exists.  Closes #482.
Ensure that weave output directory exists.  Closes #482.

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