2to3: Stop using 2to3 and remove the tools/py3tool.py file.
2to3: Stop using 2to3 and remove the tools/py3tool.py file.

The same code base now supports python versions 2.6-2.7 and 3.2-3.3.

Closes #3247.

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