OHAI-174: Always switch to a readable directory. Keeps subsequent Dir.chdir() {} from failing due to permissions when launched as a less privileged user.
OHAI-174: Always switch to a readable directory. Keeps subsequent
Dir.chdir() {} from failing due to permissions when launched as a less
privileged user.

btm/ohai,dreamnite/ohai,criteo-forks/ohai,jaymzh/ohai,jseely/ohai,Fodoj/ohai,sh9189/ohai,joyent/ohai,johnbellone/ohai,broadinstitute/ohai,MSOpenTech/ohai,nathwill/ohai,phreakocious/ohai,juliandunn/ohai,phreakocious/ohai,chef/ohai,acaiafa/ohai,jaymzh/ohai,jbfavre/ohai,nathwill/ohai,n-marton/ohai,adamleff/ohai,juliandunn/ohai,bougyman/ohai,zshuo/ohai,http-418/ohai,cmluciano/ohai,ktheory/ohai,sh9189/ohai,tas50/ohai-1,numericillustration/ohai,dreamnite/ohai,glennmatthews/ohai,higanworks/ohai,shtzr840329/ohai,cmluciano/ohai,http-418/ohai,tas50/ohai-1,shtzr840329/ohai,numericillustration/ohai,btm/ohai,Fodoj/ohai,glennmatthews/ohai,MSOpenTech/ohai,criteo-forks/ohai,jseely/ohai,Juniper/ohai,chef/ohai,bougyman/ohai,davide125/ohai,375gnu/ohai,mattray/ohai,375gnu/ohai,n-marton/ohai,Juniper/ohai,mattray/ohai,jbfavre/ohai,davide125/ohai,higanworks/ohai,acaiafa/ohai,johnbellone/ohai,broadinstitute/ohai,zuazo-forks/ohai,adamleff/ohai,zshuo/ohai