XFAILed a test in test_integrals.py (related to #1304)
XFAILed a test in test_integrals.py (related to #1304)

After Basic.keep_sign was removed, one algebraic integral test doesn't
work anymore. We need to write heuristics (pattern matching) to handle
most common integrals of the form (a*x**2 + b)**(+/- 1/2).

kaichogami/sympy,debugger22/sympy,beni55/sympy,maniteja123/sympy,mafiya69/sympy,atsao72/sympy,diofant/diofant,cccfran/sympy,chaffra/sympy,Davidjohnwilson/sympy,Gadal/sympy,Gadal/sympy,moble/sympy,farhaanbukhsh/sympy,Davidjohnwilson/sympy,sahmed95/sympy,beni55/sympy,souravsingh/sympy,Sumith1896/sympy,ga7g08/sympy,shipci/sympy,oliverlee/sympy,chaffra/sympy,wanglongqi/sympy,yashsharan/sympy,jaimahajan1997/sympy,MechCoder/sympy,pbrady/sympy,madan96/sympy,atreyv/sympy,kmacinnis/sympy,VaibhavAgarwalVA/sympy,toolforger/sympy,jbbskinny/sympy,saurabhjn76/sympy,emon10005/sympy,vipulroxx/sympy,srjoglekar246/sympy,Sumith1896/sympy,wanglongqi/sympy,shipci/sympy,yukoba/sympy,minrk/sympy,abhiii5459/sympy,kmacinnis/sympy,shipci/sympy,kumarkrishna/sympy,jerli/sympy,cswiercz/sympy,minrk/sympy,toolforger/sympy,meghana1995/sympy,sahilshekhawat/sympy,sampadsaha5/sympy,jerli/sympy,Designist/sympy,Mitchkoens/sympy,abhiii5459/sympy,abloomston/sympy,jamesblunt/sympy,asm666/sympy,souravsingh/sympy,Sumith1896/sympy,Vishluck/sympy,Curious72/sympy,grevutiu-gabriel/sympy,sunny94/temp,garvitr/sympy,kaushik94/sympy,ga7g08/sympy,hargup/sympy,aktech/sympy,sampadsaha5/sympy,wyom/sympy,drufat/sympy,vipulroxx/sympy,shikil/sympy,Arafatk/sympy,sahilshekhawat/sympy,bukzor/sympy,farhaanbukhsh/sympy,Curious72/sympy,kevalds51/sympy,lidavidm/sympy,yukoba/sympy,amitjamadagni/sympy,debugger22/sympy,bukzor/sympy,MridulS/sympy,oliverlee/sympy,atsao72/sympy,emon10005/sympy,yashsharan/sympy,yukoba/sympy,hargup/sympy,shikil/sympy,postvakje/sympy,bukzor/sympy,abloomston/sympy,madan96/sympy,oliverlee/sympy,iamutkarshtiwari/sympy,meghana1995/sympy,rahuldan/sympy,shikil/sympy,AkademieOlympia/sympy,Arafatk/sympy,postvakje/sympy,Shaswat27/sympy,ChristinaZografou/sympy,liangjiaxing/sympy,drufat/sympy,lindsayad/sympy,madan96/sympy,dqnykamp/sympy,lindsayad/sympy,aktech/sympy,kaushik94/sympy,VaibhavAgarwalVA/sympy,aktech/sympy,sunny94/temp,moble/sympy,AunShiLord/sympy,abloomston/sympy,asm666/sympy,jamesblunt/sympy,skirpichev/omg,Mitchkoens/sympy,skidzo/sympy,cccfran/sympy,jaimahajan1997/sympy,beni55/sympy,souravsingh/sympy,jbbskinny/sympy,vipulroxx/sympy,mafiya69/sympy,jerli/sympy,grevutiu-gabriel/sympy,postvakje/sympy,kevalds51/sympy,ahhda/sympy,atreyv/sympy,ahhda/sympy,Gadal/sympy,wyom/sympy,chaffra/sympy,kaichogami/sympy,mafiya69/sympy,drufat/sympy,MridulS/sympy,hrashk/sympy,abhiii5459/sympy,dqnykamp/sympy,Arafatk/sympy,jaimahajan1997/sympy,sampadsaha5/sympy,flacjacket/sympy,kumarkrishna/sympy,yashsharan/sympy,iamutkarshtiwari/sympy,Davidjohnwilson/sympy,Titan-C/sympy,Vishluck/sympy,saurabhjn76/sympy,pandeyadarsh/sympy,Designist/sympy,asm666/sympy,liangjiaxing/sympy,farhaanbukhsh/sympy,kumarkrishna/sympy,maniteja123/sympy,Designist/sympy,toolforger/sympy,hrashk/sympy,rahuldan/sympy,Curious72/sympy,skidzo/sympy,Shaswat27/sympy,mcdaniel67/sympy,cswiercz/sympy,Shaswat27/sympy,liangjiaxing/sympy,rahuldan/sympy,pbrady/sympy,wyom/sympy,mcdaniel67/sympy,AkademieOlympia/sympy,kevalds51/sympy,jbbskinny/sympy,amitjamadagni/sympy,wanglongqi/sympy,Titan-C/sympy,garvitr/sympy,debugger22/sympy,kmacinnis/sympy,AkademieOlympia/sympy,ChristinaZografou/sympy,dqnykamp/sympy,kaichogami/sympy,emon10005/sympy,AunShiLord/sympy,hargup/sympy,lindsayad/sympy,mcdaniel67/sympy,garvitr/sympy,sahmed95/sympy,MechCoder/sympy,VaibhavAgarwalVA/sympy,lidavidm/sympy,ChristinaZografou/sympy,sahmed95/sympy,pandeyadarsh/sympy,ga7g08/sympy,pandeyadarsh/sympy,cccfran/sympy,lidavidm/sympy,Titan-C/sympy,maniteja123/sympy,moble/sympy,hrashk/sympy,ahhda/sympy,sunny94/temp,skidzo/sympy,sahilshekhawat/sympy,atsao72/sympy,jamesblunt/sympy,atreyv/sympy,MridulS/sympy,cswiercz/sympy,saurabhjn76/sympy,meghana1995/sympy,kaushik94/sympy,MechCoder/sympy,AunShiLord/sympy,grevutiu-gabriel/sympy,Vishluck/sympy,iamutkarshtiwari/sympy,Mitchkoens/sympy,pbrady/sympy