clarify /tmp in RFD 121
clarify /tmp in RFD 121

davepacheco/rfd,melloc/rfd,joyent/rfd,davepacheco/rfd,joyent/rfd,joyent/rfd,davepacheco/rfd,melloc/rfd,davepacheco/rfd,joyent/rfd,davepacheco/rfd,melloc/rfd