Turn REPOS_DIR into a list or repository to read configuration from
Turn REPOS_DIR into a list or repository to read configuration from

By default read configuration from /etc/pkg and /usr/local/etc/pkg/repos

Discussed with:	jonathan, des, gavin (@BSDCam)

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