polys: Fixed tuple.index() for Python 2.5
polys: Fixed tuple.index() for Python 2.5

toolforger/sympy,MridulS/sympy,Sumith1896/sympy,Designist/sympy,farhaanbukhsh/sympy,souravsingh/sympy,hargup/sympy,oliverlee/sympy,jerli/sympy,sampadsaha5/sympy,oliverlee/sympy,kevalds51/sympy,sahmed95/sympy,grevutiu-gabriel/sympy,cswiercz/sympy,atsao72/sympy,souravsingh/sympy,AkademieOlympia/sympy,atreyv/sympy,dqnykamp/sympy,wyom/sympy,jbbskinny/sympy,postvakje/sympy,mafiya69/sympy,postvakje/sympy,iamutkarshtiwari/sympy,Arafatk/sympy,pbrady/sympy,sahmed95/sympy,chaffra/sympy,kaichogami/sympy,MridulS/sympy,yukoba/sympy,drufat/sympy,pandeyadarsh/sympy,amitjamadagni/sympy,hargup/sympy,AunShiLord/sympy,sunny94/temp,jamesblunt/sympy,farhaanbukhsh/sympy,asm666/sympy,wyom/sympy,kevalds51/sympy,VaibhavAgarwalVA/sympy,moble/sympy,liangjiaxing/sympy,sahilshekhawat/sympy,beni55/sympy,farhaanbukhsh/sympy,kaushik94/sympy,madan96/sympy,sahilshekhawat/sympy,emon10005/sympy,toolforger/sympy,abhiii5459/sympy,aktech/sympy,abloomston/sympy,MechCoder/sympy,Titan-C/sympy,Gadal/sympy,beni55/sympy,Mitchkoens/sympy,jaimahajan1997/sympy,Curious72/sympy,ahhda/sympy,AunShiLord/sympy,atreyv/sympy,Titan-C/sympy,sampadsaha5/sympy,pbrady/sympy,bukzor/sympy,debugger22/sympy,Gadal/sympy,lindsayad/sympy,madan96/sympy,mcdaniel67/sympy,Davidjohnwilson/sympy,chaffra/sympy,vipulroxx/sympy,Titan-C/sympy,mcdaniel67/sympy,sunny94/temp,cswiercz/sympy,maniteja123/sympy,Vishluck/sympy,AunShiLord/sympy,Vishluck/sympy,bukzor/sympy,wanglongqi/sympy,lidavidm/sympy,sunny94/temp,skirpichev/omg,Shaswat27/sympy,beni55/sympy,aktech/sympy,emon10005/sympy,Sumith1896/sympy,AkademieOlympia/sympy,kaichogami/sympy,kumarkrishna/sympy,cccfran/sympy,drufat/sympy,Shaswat27/sympy,sahmed95/sympy,ga7g08/sympy,ChristinaZografou/sympy,ChristinaZografou/sympy,skidzo/sympy,atsao72/sympy,Davidjohnwilson/sympy,Vishluck/sympy,mcdaniel67/sympy,moble/sympy,lindsayad/sympy,wyom/sympy,ChristinaZografou/sympy,oliverlee/sympy,hrashk/sympy,kaichogami/sympy,kumarkrishna/sympy,mafiya69/sympy,postvakje/sympy,lidavidm/sympy,sampadsaha5/sympy,shikil/sympy,garvitr/sympy,hrashk/sympy,AkademieOlympia/sympy,MridulS/sympy,amitjamadagni/sympy,kmacinnis/sympy,debugger22/sympy,abhiii5459/sympy,MechCoder/sympy,iamutkarshtiwari/sympy,yashsharan/sympy,Mitchkoens/sympy,wanglongqi/sympy,moble/sympy,pandeyadarsh/sympy,ga7g08/sympy,jbbskinny/sympy,MechCoder/sympy,debugger22/sympy,souravsingh/sympy,Davidjohnwilson/sympy,asm666/sympy,Designist/sympy,abhiii5459/sympy,lidavidm/sympy,toolforger/sympy,jerli/sympy,liangjiaxing/sympy,ga7g08/sympy,yukoba/sympy,yukoba/sympy,shipci/sympy,Shaswat27/sympy,kaushik94/sympy,atreyv/sympy,Designist/sympy,dqnykamp/sympy,maniteja123/sympy,chaffra/sympy,kmacinnis/sympy,dqnykamp/sympy,diofant/diofant,hargup/sympy,grevutiu-gabriel/sympy,ahhda/sympy,mafiya69/sympy,Curious72/sympy,rahuldan/sympy,grevutiu-gabriel/sympy,cswiercz/sympy,Curious72/sympy,saurabhjn76/sympy,lindsayad/sympy,meghana1995/sympy,skidzo/sympy,kumarkrishna/sympy,saurabhjn76/sympy,pandeyadarsh/sympy,liangjiaxing/sympy,abloomston/sympy,yashsharan/sympy,kaushik94/sympy,Mitchkoens/sympy,meghana1995/sympy,Sumith1896/sympy,VaibhavAgarwalVA/sympy,jbbskinny/sympy,garvitr/sympy,VaibhavAgarwalVA/sympy,atsao72/sympy,abloomston/sympy,jaimahajan1997/sympy,sahilshekhawat/sympy,jaimahajan1997/sympy,shipci/sympy,emon10005/sympy,wanglongqi/sympy,asm666/sympy,rahuldan/sympy,aktech/sympy,pbrady/sympy,hrashk/sympy,yashsharan/sympy,shikil/sympy,vipulroxx/sympy,kevalds51/sympy,jamesblunt/sympy,shikil/sympy,iamutkarshtiwari/sympy,meghana1995/sympy,skidzo/sympy,drufat/sympy,cccfran/sympy,bukzor/sympy,Gadal/sympy,Arafatk/sympy,vipulroxx/sympy,maniteja123/sympy,shipci/sympy,madan96/sympy,saurabhjn76/sympy,jamesblunt/sympy,kmacinnis/sympy,ahhda/sympy,cccfran/sympy,Arafatk/sympy,garvitr/sympy,jerli/sympy,rahuldan/sympy