Fixed a bug with pipeline execution of AUTH and SELECT commands.  These failed after MULTI and EXEC were added, since you can't run MULTI until you've auth'd, and it doesn't make sense to run SELECT within a multi/exec.
Fixed a bug with pipeline execution of AUTH and SELECT commands.  These failed after MULTI and EXEC were added, since you can't run MULTI until you've auth'd, and it doesn't make sense to run SELECT within a multi/exec.

Thanks Pat Shields for the bug report

siryuan525614/python_operation,nfvs/redis-py,5977862/redis-py,sirk390/redis-py,softliumin/redis-py,RedisLabs/redis-py,yuruidong/redis-py,ze-phyr-us/redis-py,fengsp/redis-py,dmugtasimov/redis-py,wfxiang08/redis-py,maxikov/redis-py,sigma-random/redis-py,VishvajitP/redis-py,andymccurdy/redis-py,mozillazg/redis-py-doc,zhangyancoder/redis-py,fengshao0907/redis-py,JamieCressey/redispy,5977862/redis-py,MrKiven/redis-py,harlowja/redis-py,wfxiang08/redis-py,rcrdclub/redis-py,nfvs/redis-py,MegaByte875/redis-py,sigma-random/redis-py,ffrree/redis-py,dmoliveira/redis-py,LTD-Beget/redis-py,grahame/redis-py,thedrow/redis-py,boyxuper/redis-py,alisaifee/redis-py,joshowen/redis-py,garnertb/redis-py,forblackking/redis-py,RedisLabs/redis-py,jparise/redis-py,LTD-Beget/redis-py,fengsp/redis-py,VishvajitP/redis-py,kaushik94/redis-py,dylanjw/redis-py,barseghyanartur/redis-py,ze-phyr-us/redis-py,JamieCressey/redispy,redis/redis-py,ferrero-zhang/redis-py,softliumin/redis-py,ferrero-zhang/redis-py,VishvajitP/redis-py,thedrow/redis-py,harlowja/redis-py,MegaByte875/redis-py,redis/redis-py,barseghyanartur/redis-py,dmoliveira/redis-py,pombredanne/redis-py,sunminghong/redis-py,cvrebert/redis-py,Instagram/redis-py,kaushik94/redis-py,fengshao0907/redis-py,yihuang/redis-py,kouhou/redis-py,pombredanne/redis-py,forblackking/redis-py,alisaifee/redis-py,ferrero-zhang/redis-py,joshowen/redis-py,zhangyancoder/redis-py,kouhou/redis-py,kaushik94/redis-py,LTD-Beget/redis-py,twidi/redis-py.old,Kazanz/redis-py,siryuan525614/python_operation,5977862/redis-py,dmugtasimov/redis-py,sigma-random/redis-py,JamieCressey/redispy,lamby/redis-py,yuruidong/redis-py,thedrow/redis-py,hyatzh/redis-py,yihuang/redis-py,piperck/redis-py,cvrebert/redis-py,ycaihua/redis-py,boyxuper/redis-py,mozillazg/redis-py-doc,MrKiven/redis-py,maxikov/redis-py,garnertb/redis-py,Kazanz/redis-py,dmugtasimov/redis-py,andymccurdy/redis-py,kouhou/redis-py,Kazanz/redis-py,yihuang/redis-py,WoLpH/redis-py,cvrebert/redis-py,ffrree/redis-py,barseghyanartur/redis-py,softliumin/redis-py,nfvs/redis-py,jparise/redis-py,zhangyancoder/redis-py,ContextLogic/redis-py,ycaihua/redis-py,sirk390/redis-py,MegaByte875/redis-py,MrKiven/redis-py,joshowen/redis-py,piperck/redis-py,siryuan525614/python_operation,dylanjw/redis-py,yuruidong/redis-py,pombredanne/redis-py,sunminghong/redis-py,boyxuper/redis-py,ze-phyr-us/redis-py,fengsp/redis-py,maxikov/redis-py,piperck/redis-py,fengshao0907/redis-py,rcrdclub/redis-py,dylanjw/redis-py,ycaihua/redis-py,OpenInkpot-archive/iplinux-python-redis,forblackking/redis-py,wfxiang08/redis-py,sirk390/redis-py,garnertb/redis-py,raphaelfruneaux/redis-py,lamby/redis-py,sunminghong/redis-py,ContextLogic/redis-py,ContextLogic/redis-py,lamby/redis-py,rcrdclub/redis-py,andymccurdy/redis-py,dmoliveira/redis-py,jparise/redis-py,OpenInkpot-archive/iplinux-redis-py,ffrree/redis-py,harlowja/redis-py