- Update to checkin e3445da which is 3.1-RC2

Changes:
  * Fix pkgclean -f after recent cwd changes
  * Fix for native-xdev login.conf support


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@372797 35697150-7ecd-e111-bb59-0022644237b5
Add recommedation that users safe there current list of ports before doing
the upgrade so they can later install them again if the update removed them.

Discussed with: wblock@


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@372798 35697150-7ecd-e111-bb59-0022644237b5