Remove expired ports:

2019-10-16 archivers/freetar: Unfetchable, unmaintained
2019-10-16 archivers/hffzip: Unfetchable, unmaintained
2019-10-16 archivers/hpack.non-usa.only: Unfetchable, unmaintained
2019-10-16 archivers/untar: Unfetchable, unmaintained
2019-10-16 astro/gpsdrive: Unfetchable, unmaintained
2019-10-16 astro/planets: Unfetchable, unmaintained
2019-10-16 audio/ascd: Unfetchable, unmaintained
2019-10-16 audio/audiotag: Unfetchable, unmaintained
2019-10-16 audio/gmidimonitor: Unfetchable, unmaintained
2019-10-16 audio/gmpc-lyricwiki: Unfetchable, unmaintained
2019-10-16 audio/jack_mixer: Unfetchable, unmaintained
2019-10-16 audio/jmusic: Unfetchable, unmaintained
2019-10-16 audio/maplay: Unfetchable, unmaintained

Deprecate a few ports

Convert to UCL & cleanup pkg-message (categories s)

Mark BROKEN: unfetchable

Remove ${PORTSDIR}/ from dependencies, categories r, s, t, and u.

With hat:	portmgr
Sponsored by:	Absolight

Fix usage of ${PERL5}.

${PERL5} points to a specific version of perl, say, perl5.22.1, it is
fine to use it in a ports Makefile to do Perly things, but ports using
it must use ${PERL}, that points to /usr/local/bin/perl so that if the
minor version is updated, the shebang keep working.

While there, make some ports use shebangfix, regen a few patches, and
bump PORTREVISION where a shebang went from PERL5 to PERL.

PR:		205367
With hat:	portmgr
Sponsored by:	Absolight

Fix ports that confused the meaning of WRKDIR and WRKSRC.

PR:		204056
Submitted by:	mat
Reviewed by:	bapt
Sponsored by:	Absolight
Differential Revision:	https://reviews.freebsd.org/D2735

Drop maintainership of all remaining ports where I am listed.
No time for this unfortunately.

- Support staging
- Use shebangfix

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

- convert to the new perl5 framework
- trim Makefile header

Approved by:	portmgr (bapt@, blanket)

- Remove SITE_PERL from *_DEPENDS

Approved by: portmgr@ (bapt@)

In the rc.d scripts, change assignments to rcvar to use the
literal name_enable wherever possible, and ${name}_enable
when it's not, to prepare for the demise of set_rcvar().

In cases where I had to hand-edit unusual instances also
modify formatting slightly to be more uniform (and in
some cases, correct). This includes adding some $FreeBSD$
tags, and most importantly moving rcvar= to right after
name= so it's clear that one is derived from the other.

-remove MD5

Begin the process of deprecating sysutils/rc_subr by
s#. %%RC_SUBR%%#. /etc/rc.subr#

Fix a few "bad example" problems in the rc.d scripts that have been
propogated by copy and paste.

1. Primarily the "empty variable" default assignment, which is mostly
${name}_flags="", but fix a few others as well.
2. Where they are not already documented, add the existence of the _flags
(or other deleted empties) option to the comments, and in some cases add
comments from scratch.
3. Replace things that look like:
prefix=%%PREFIX%%
command=${prefix}/sbin/foo
to just use %%PREFIX%%. In many cases the $prefix variable is only used
once, and in some cases it is not used at all.
4. In a few cases remove ${name}_flags from command_args
5. Remove a long-stale comment about putting the port's rc.d script in
/etc/rc.d (which is no longer necessary).

No PORTREVISION bumps because all of these changes are noops.

Fiddle rcorder bits in the startup script, so that sshblock actually
starts on boot.

Add sshblock, a tool to block abusive SSH login attempts.