Add support for -R option
Add support for -R option

PM_UPDATE_DONE_FLAGs are stored in /var/db/pkg/* directories, which
are created on demand and are removed when found empty.

khorben/pkg,junovitch/pkg,Open343/pkg,khorben/pkg,khorben/pkg,en90/pkg,skoef/pkg,en90/pkg,junovitch/pkg,skoef/pkg,Open343/pkg