misc/ctm 2.0_5

misc/ctm: fix build warnings, add symlink and filename encoding support

Fix compiler warnings in mkctm.c, resolve logf name clash, fix change
  counting, and add symlink handling needed for src-13/14 deltas.
  Also add filename encoding for paths with special characters and
  ownermail support for ctm_smail.

  PR:           275921
  Approved by:  se@FreeBSD.org (maintainer timeout)

MAN?PREFIX: eleminate its usage  and move man to share/man

mail/ctm: Fix build with -Wdeprecated-non-prototype.

Differential Revision:	https://reviews.freebsd.org/D39819

Remove WWW entries moved into port Makefiles

Commit b7f05445c00f has added WWW entries to port Makefiles based on
WWW: lines in pkg-descr files.

This commit removes the WWW: lines of moved-over URLs from these
pkg-descr files.

Approved by:		portmgr (tcberner)

Add WWW entries to port Makefiles

It has been common practice to have one or more URLs at the end of the
ports' pkg-descr files, one per line and prefixed with "WWW:". These
URLs should point at a project website or other relevant resources.

Access to these URLs required processing of the pkg-descr files, and
they have often become stale over time. If more than one such URL was
present in a pkg-descr file, only the first one was tarnsfered into
the port INDEX, but for many ports only the last line did contain the
port specific URL to further information.

There have been several proposals to make a project URL available as
a macro in the ports' Makefiles, over time.

This commit implements such a proposal and moves one of the WWW: entries
of each pkg-descr file into the respective port's Makefile. A heuristic
attempts to identify the most relevant URL in case there is more than
one WWW: entry in some pkg-descr file. URLs that are not moved into the
Makefile are prefixed with "See also:" instead of "WWW:" in the pkg-descr
files in order to preserve them.

There are 1256 ports that had no WWW: entries in pkg-descr files. These
ports will not be touched in this commit.

The portlint port has been adjusted to expect a WWW entry in each port
Makefile, and to flag any remaining "WWW:" lines in pkg-descr files as
deprecated.

Approved by:		portmgr (tcberner)

One more small cleanup, forgotten yesterday. Reported by:	lwhsu

Remove # $FreeBSD$ from Makefiles.

Make ctm use the file mode listed in the CTM delta.

PR:		245415
Submitted by:	stephen
Approved by:	antoine (implicit)

Apply changes developed by Stephen Montgomery-Smith and required to actually use CTM to distribute FreeBSD updates. They have been further refined by Julian H. Stacey.

These changes add support for delta numbers with more than 5 digits
and better compression formats.

Submitted by:	Stephen Montgomery-Smith, Julian H. Stacey
Approved by:	antoine (implicit)

Track move of the Github repo from bsdimp/ctm to freebsd/ctm.

The port revision has not been bumped since the package is unchanged
except for the URL to the repository in the package description, and no
official packages with the old URL have been made available, yet.

Approved by:	antoine (implicit)

Add URL of the Github repository that contains the ctm sources and the upgrade history preserved from the sources in FreeBSD base.

Approved by:	antoine (implicit)

Add new port misc/ctm.

This port is a slightly modified version of the port as distributed with
FreeBSD up to version 12. The port install man pages in section 8 instead
of section 1, since all binaries are installed in sbin.

Approved by:	antoine (mentor)