Make bin/coverage_doctest.py skip test_ and bench_ files
Make bin/coverage_doctest.py skip test_ and bench_ files

It only skips when parsing a directory argument.  If a test_ or bench_
file is explicitly given, it will be checked for doctests.

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