Added an XFAIL separatevars test
Added an XFAIL separatevars test

This is of a case that requires advanced factoring (factoring of
non-symbols) to separate the variables.

Signed-off-by: Ondrej Certik <b816faa87b7d35274d2e545c5be11ed4376f3ccf@certik.cz>

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