Log message:
net/unison2.32: Remove

As proposed on pkgsrc-users with no comments.  Note that unison has
multiple versions only to deal with wire protocol breaks that happen
every version; without that there would just be a single recent unison
version.

In addition to being very old and unused, I believe that 2.32 from
pkgsrc cannot work to interoperate with other systems that still have
2.32, because pkgsrc's ocaml version has an incompatible serialization
format, and the unison wire protocol is effectively the combination of
the unison version and the ocaml serialization version.

(Separate from 2.40 removal to ease separate reverting, should it be
necessary.)

Log message:
Rename bin/unison to bin/unison-2.32 so it can co-exist with other versions of unison

Also add ALTERNATIVES file.

Log message:
net/unison*: Update upstream status

Log message:
net/unison*: Clarify version reasons in DESCR

Briefly, 2.51 is current, 2.48 is old but not ridiculously so, and
2.32 and 2.40 are likely not in use.  Point out that old versions are
present because unison does not interoperate across versions.

Log message:
*: recursive bump for gdk-pixbuf2-2.38.1

Log message:
*: recursive bump for nettle 3.5.1

Log message:
Recursive rebvump from devel/nss

Log message:
Recursive revbump from textproc/icu

Log message:
revbump after updating textproc/icu

Log message:
Revbump for libcanberra gstreamer change.