Support tcsh.
Support tcsh.

This just adds tcsh to the list of supported shells, with its profile as
~/.tcshrc.

whilp/hub,aspiers/hub,pcorpet/hub,aereal/hub,jpkrohling/hub,isundaylee/hub,dev4mobile/hub,pankona/hub,tomasv/hub,ASidlinskiy/hub,codydaig/hub,github/hub,nmfzone/hub,haikyuu/hub,sbp/hub,cpick/hub,dev4mobile/hub,elancom/hub,pankona/hub,SanCoder-Q/hub,jingweno/hub,AndBicScadMedia/hub,hopil/hub,isundaylee/hub,jingweno/hub,nmfzone/hub,whilp/hub,jpkrohling/hub,pcorpet/hub,codydaig/hub,jpkrohling/hub,naru0504/hub,xantage/hub,github/hub,haikyuu/hub,jingweno/hub,AndBicScadMedia/hub,xantage/hub,ryo33/hub,aspiers/hub,ASidlinskiy/hub,terry2000/hub,RichardLitt/hub,nlutsenko/hub,boris-rea/hub,github/hub,naru0504/hub,ryo33/hub,pwaller/hub,sbp/hub,pwaller/hub,pcorpet/hub,hopil/hub,cpick/hub,ryo33/hub,SanCoder-Q/hub,dongjoon-hyun/hub,boris-rea/hub,pankona/hub,dongjoon-hyun/hub,xantage/hub,hb9kns/hub,AndBicScadMedia/hub,ASidlinskiy/hub,rlugojr/hub,adjohnson916/hub,dev4mobile/hub,whilp/hub,adjohnson916/hub,hb9kns/hub,aereal/hub,RichardLitt/hub,SanCoder-Q/hub,github/hub,pwaller/hub,terry2000/hub,adjohnson916/hub,RichardLitt/hub,hb9kns/hub,nmfzone/hub,elancom/hub,codydaig/hub,sbp/hub,haikyuu/hub,dongjoon-hyun/hub,naru0504/hub,tomasv/hub,rlugojr/hub,boris-rea/hub,terry2000/hub,rlugojr/hub,nlutsenko/hub,isundaylee/hub,elancom/hub,hopil/hub,nlutsenko/hub,aspiers/hub,tomasv/hub,cpick/hub,aereal/hub