No UPDATING entry and some ports missed in curl update

[Kevin Oberman]

It is a good thing to get curl up to date and I appreciate the effort
involved by you and several others.

While the curl port was updated to 7.31.0 and lots of ports using the
sharable had bumps, I have found three ports on my system that link to
libcurl and were not bumped: devel/git, textproc/rasqal, and
textproc/redland.

There was no entry in UPDATING, so there was no warning that saving a copy
of the old sharable would be a good thing, either.
-- 
R. Kevin Oberman, Network Engineer
E-mail: rkoberman at gmail.com