Travis: fix the missing "lmroman10" problem
Travis: fix the missing "lmroman10" problem

I followed the advice from:

http://tex.stackexchange.com/questions/652/xetex-not-working-on-ubuntu-10-04

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