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

- Fix trailing whitespace in pkg-descrs, categories [g-n]*

Approved by:	portmgr blanket

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

With hat:	portmgr
Sponsored by:	Absolight

Cleanup dependencies on lang/p5-Scalar-List-Utils.

The different cases are:

- Only bring it if the one bundled with Perl is outdated.
- The version bundled with all our Perl is sufficient.
- Scalar-List-Util is not really needed by the port.
  (looking for /(Sub|Scalar|List)::Util/ returns nothing.)

While there, do some minor cleanup that caught my eye.

PR:		208378
With hat:	perl@
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

- support stage

Approved by:	portmgr (blanket infrastructure)

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

- convert to the new perl5 framework

Approved by:	portmgr (bapt@, blanket)

- Do not remove directories not created by this port

A Reported by:	pkg (DEVELOPER_MODE)

- Replace ../../authors in MASTER_SITE_SUBDIR with CPAN:CPANID macro.
  See http://wiki.freebsd.org/Perl for details.
- Change maintainership from ports@ to perl@ for ports in this changeset.
- Remove MD5 checksum
- Utilize CPAN macro

This module, Net::SNMP::Util, gives you functions of SNMP getting
operation interfaces using Net::SNMP communicating with multiple
hosts and multi-OIDs.

WWW:    http://search.cpan.org/dist/Net-SNMP-Util/

PR:             ports/156021
Submitted by:   Hsin-Han You <hhyou at cs.nctu.edu.tw>