Update to describe the new repository world order:
Update to describe the new repository world order:

   - No more PKG_MULTIREPOS
   - No more multirepo mode
   - Refer to new pkg-repository.5 man page describing how
     packages are selected from the available repositories.

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