tests: test-readdir: initial commit
tests: test-readdir: initial commit

seeing some readdir stuff that is weird in virgo. write a readdir test
for luvit.

kaustavha/luvit,zhaozg/luvit,DBarney/luvit,AndrewTsao/luvit,DBarney/luvit,sousoux/luvit,sousoux/luvit,kaustavha/luvit,boundary/luvit,bsn069/luvit,luvit/luvit,AndrewTsao/luvit,boundary/luvit,rjeli/luvit,rjeli/luvit,bsn069/luvit,GabrielNicolasAvellaneda/luvit-upstream,boundary/luvit,connectFree/lev,luvit/luvit,GabrielNicolasAvellaneda/luvit-upstream,bsn069/luvit,GabrielNicolasAvellaneda/luvit-upstream,AndrewTsao/luvit,sousoux/luvit,sousoux/luvit,rjeli/luvit,sousoux/luvit,boundary/luvit,GabrielNicolasAvellaneda/luvit-upstream,connectFree/lev,boundary/luvit,sousoux/luvit,rjeli/luvit,DBarney/luvit,DBarney/luvit,boundary/luvit,zhaozg/luvit,kaustavha/luvit