(1) Additional __FreeBSD_version's from <osreldate.h>. Closes PR
docs/1438.
Submitted by: "David E. O'Brien" <obrien@Nuxi.cs.ucdavis.edu>
(2) Make it clear that when submitting a port, the package is not
necassary.
Suggested by: joerg
(3) Recommend people to use send-pr to send us notifications of new
ports and upgrades so that they won't fall between the cracks.
Suggested by: a lot of people
(4) Add a section about Motif and describe REQUIRES_MOTIF and
MOTIFLIB.
Prodded by: chuckr
(5) Revise the licensing problems section and describe the two
variables RESTRICTED and NO_CDROM.
(6) Fill in the section about upgrading. In particular, recommend to
send in diffs of the old and new ports (these are "ports", not the
original source or anything!), so it's easier to see what has
changed.