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.

net-mgmt: remove 'Created by' lines

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

  *  @BABOLO <.@babolo.ru>
  *  Alex Samorukov, samm@freebsd.org
  *  Alexander Kriventsov <avk@vl.ru>
  *  Alexander Sulfrian <alexander@sulfrian.net>
  *  Alexander Y. Grigoryev <alexander.4mail@gmail.com>
  *  Alexandre Biancalana <ale@biancalanas.net>
  *  Alexandre Snarskii <snar@paranoia.ru>
  *  Alexandre Snarskii <snar@snar.spb.ru>
  *  Alexey Bobkov <mr.deadlystorm@gmail.com>
  *  Alexey Dokuchaev <danfe@FreeBSD.org>
  *  Alexey V. Degtyarev

Remove # $FreeBSD$ from Makefiles.

Update WWW

search.cpan.org is shutting down.
It will redirect to metacpan.org after June 25, 2018.

With hat:	perl

Remove ${PORTSDIR}/ from dependencies, categories m, n, o, and p.

With hat:	portmgr
Sponsored by:	Absolight

Change the way Perl modules are installed, update the default Perl to 5.18.

Before, we had:

  site_perl :           lib/perl5/site_perl/5.18
  site_perl/perl_arch : lib/perl5/site_perl/5.18/mach
  perl_man3 :           lib/perl5/5.18/man/man3

Now we have:

  site_perl : lib/perl5/site_perl
  site_arch : lib/perl5/site_perl/mach/5.18
  perl_man3 : lib/perl5/site_perl/man/man3

Modules without any .so will be installed at the same place regardless of the

- stage support

Approved by:	portmgr (blanket infrastructure)

Add NO_STAGE all over the place in preparation for the staging support (cat:
net-mgmt)

- Convert to new perl framework

- Remove SITE_PERL from *_DEPENDS

End WWW CPAN URL with a "/"

- Get Rid MD5 support

- Add cpan site to WWW
- Fix indentation, fmt -w 80

- Remove support for ucd-snmp4 in ports, that also support net-snmp5.
  (ucd-snmp4 port is past expiration date)

Reset fenner's port maintainerships.  portmgr has taken his commit bit
into safekeeping due to inactivity.

- Take advantage of CPAN macro from bsd.sites.mk, change
${MASTER_SITE_PERL_CPAN} to CPAN.

PR:             ports/122674
Submitted by:   Philip M. Gollucci <pgollucci@p6m7g8.com>
Reworked by:    araujo (myself)
Approved by:    portmgr (pav)

- Chase shlib version of net-mgmt/net-snmp.
- Bump PORTREVISIONs.

SHA256ify

Approved by: krion@

Deprecate the dependency on net-snmp4 by folding it under a WITH_NETSNMP4
switch, and set to depend on net-snmp's builtin SNMP.pm implementation
by default.

Reviewed by:    fenner

SIZEify (maintainer timeout)

Say hello to the new "net-mgmt" category.  There are probably more
ports that belong here than the ones I have identified and moved in
this, first, pass.

Approved in principle by: marcus