This modification of the numbering scheme is precipitated by a 2nd iteration of
the Beowulf point release, i.e. new 3.1.1 ISO's.  Going forward, a Devuan
version will be designated by 'N.N', instead of 'N.N.N'.  This will reduce web
site maintenance.  There are 2 more files to consider in this regard; they will
be dealt with subsequently.

Beer's mirror is undergoing maintenance, and should be good real soon now.

Also corrected one rsync link.

This reverts commit f667245db4.

This reverts commit cefe80c3bd.