MANPREFIX: eliminate its usage

While here move manpages to share/man

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.

archivers: remove 'Created by' lines

A big Thank You to the original contributors of these ports:

  *  Aaron Dalton <aaron@FreeBSD.org>
  *  Akinori MUSHA aka knu <knu@idaemons.org>
  *  Albert Vernon <f3cun3c02@sneakemail.com>
  *  Alex Dupre <ale@FreeBSD.org>
  *  Alex Samorukov <samm@freebsd.org>
  *  Alexander Kuehn <freebsd@nagilum.org>
  *  Alexander Logvinov <ports@logvinov.com>
  *  Alexander Zhuravlev <zaa@zaa.pp.ru>
  *  Alexey Dokuchaev <danfe@FreeBSD.org>
  *  Alexey Dokuchaev <danfe@regency.nsu.ru>
  *  Anders Nordby <anders@FreeBSD.org>

archivers/ppmd: Add CPE information

Approved by:	portmgr (blanket)

Remove # $FreeBSD$ from Makefiles.

Fix plenty of check-sanity warnings:
Add licenses
Modernize using USES=gnome and USES=xorg

Update WWW and MASTER_SITES

Fix build with clang 6.

PR:             226176 (related)
Notified by:    emaste (fix provided via mail)

Fix build on 12.0-CURRENT after upgrading clang, llvm, lld, lldb, compiler-rt
and libc++ to 6.0.0 by falling back to gcc.

Notified by:	pkg-fallout

Move MASTER_SITES from CRITICAL to LOCAL/ehaupt

Quiesce mkdir

Eliminate inclusion of bsd.port.options.mk where PORT_OPTIONS is not tested for
afterwards.

Encouraged by:	mat

Now that this port is staged and DOCS defined we can stop testing for DOCS in
any install target.

Support staging

Add NO_STAGE all over the place in preparation for the staging support (cat:
archivers)

Remove MAKE_JOBS_SAFE which is now default.

- Use DOC instead of NOPORTDOCS
- Pacify portlint
- Convert header

For a number of ports in archives category, trim the header and drop leading
indefinite article from COMMENT line; also fix few noticed styles bugs while
I am here.

- remove maintainer tags from pkg-descr

Approved by:    portmgr
Approved by:    bapt (mentor)

- Get Rid MD5 support

With hat:       portmgr (myself)

Mark MAKE_JOBS_SAFE

Use MASTER_SITE_CRITICAL

Add an additional mirror.

Add SHA256 hashes to my ports

Change MAINTAINER address for my ports.

Approved by:    novel (mentor)

Add ppmd 20050811, a fast archiver with a good compression ratio.

PR:             ports/84796
Submitted by:   Emanuel Haupt <ehaupt@critical.ch>