Update to 2.3.1.


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@371095 35697150-7ecd-e111-bb59-0022644237b5
- Convert ports from accessibility/, archivers/ and astro/ to new
  USES=python

Approved by:	portmgr (implicit)
With hat:	python@


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@371096 35697150-7ecd-e111-bb59-0022644237b5
- Convert to USES=python

Approved by:	portmgr (implicit)
With hat:	python@


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@371097 35697150-7ecd-e111-bb59-0022644237b5