[svn r37866] small cleanup of ground std* descriptors.
[svn r37866] small cleanup of ground std* descriptors.

--HG--
branch : trunk

doordash/pytest,etataurov/pytest,inirudebwoy/pytest,oleg-alexandrov/pytest,Carreau/pytest,MengJueM/pytest,omarkohl/pytest,pelme/pytest,nicoddemus/repo-test,chillbear/pytest,gabrielcnr/pytest,abusalimov/pytest,ddboline/pytest,Bjwebb/pytest,skylarjhdownes/pytest,icemac/pytest,txomon/pytest,chillbear/pytest,pytest-dev/pytest,icemac/pytest,doordash/pytest,jaraco/pytest,lukas-bednar/pytest,ropez/pytest,gabrielcnr/pytest,hpk42/pytest,takluyver/pytest,takluyver/pytest,untitaker/pytest,ericdill/pytest,Bjwebb/pytest,userzimmermann/pytest,ionelmc/pytest,codewarrior0/pytest,mhils/pytest,vodik/pytest,ionelmc/pytest,ericdill/pytest,nicoddemus/pytest,davidszotten/pytest,wfxiang08/pytest,ghostsquad/pytest,tgoodlet/pytest,MichaelAquilina/pytest,Magicjarvis/py,mhils/pytest,pytest-dev/py,Akasurde/pytest,ghostsquad/pytest,Bachmann1234/pytest,JonathonSonesen/pytest,RonnyPfannschmidt/pytest,nicoddemus/pytest,markshao/pytest,The-Compiler/pytest,chiller/pytest,userzimmermann/pytest,bubenkoff/pytest,codewarrior0/pytest,tomviner/pytest,hackebrot/pytest,jb098/pytest,jb098/pytest,bubenkoff/pytest,bukzor/pytest,chiller/pytest,ropez/pytest,tomviner/pytest,lukas-bednar/pytest,ojake/pytest,malinoff/pytest,rouge8/pytest,MengJueM/pytest,tareqalayan/pytest,wfxiang08/pytest,mdboom/pytest,vodik/pytest,rouge8/pytest,pelme/pytest,eli-b/pytest,Haibo-Wang-ORG/pytest,Haibo-Wang-ORG/pytest,abusalimov/pytest,pfctdayelise/pytest,Bachmann1234/pytest,hunse/pytest,The-Compiler/pytest,vmalloc/dessert,hunse/pytest,alfredodeza/pytest,hpk42/pytest,untitaker/pytest,rmfitzpatrick/pytest,omarkohl/pytest,flub/pytest,Carreau/pytest,oleg-alexandrov/pytest,JonathonSonesen/pytest,bukzor/pytest,mbirtwell/pytest,inirudebwoy/pytest,nicoddemus/repo-test,mbirtwell/pytest,ojake/pytest,mdboom/pytest