• Add reference to 3.X in <title> and <abstract>
• -stable -> -STABLE
• -current -> -CURRENT
• Update 3.0/3.2 entries to 3.3 or 3.X as appropriate
• .x -> .X (i.e., 3.x -> 3.X)
• Update entries to correspond to new directory structure on ftp site
• Removed reference to RELENG_2_ snapshots, which no longer exist
• Add reference to allscreens_flags="-m on" for moused
• Note that 3.3-RELEASE has 8 virtual terminals by default

Submitter sent the original PR, Jim Mock added to it, I cleaned up a
couple of bits and pieces.

PR: docs/13949
Submitted by: Chris D. Faulhaber <jedgar@fxp.org>, jim