Remove expired ports:

Adjusted for ports rescued since r534032

2020-05-05 audio/festvox-czech: Broken for more than 6 months
2020-05-05 audio/gkrellmvolume2: Broken for more than 6 months
2020-05-05 audio/mixmos: Broken for more than 6 months
2020-05-05 audio/mma: Broken for more than 6 months
2020-05-05 audio/pd-cyclone: Broken for more than 6 months
2020-05-05 audio/shorten: Broken for more than 6 months
2020-05-05 audio/taglib-sharp: Broken for more than 6 months
2020-05-05 audio/xhippo: Broken for more than 6 months
2020-05-05 biology/consed: Broken for more than 6 months
2020-05-05 biology/plinkseq: Broken for more than 6 months
2020-05-05 biology/seqtools: Broken for more than 6 months

Deprecate ports broken for more than 6 months

Mark a few ports BROKEN (unfetchable)

In several dozen ports, use single space for WWW: line in pkg-descr, and
reformat port description text in cases when it was notoriously broken.

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

With hat:	portmgr
Sponsored by:	Absolight

- Support staging
- Use shebangfix
- Use INSTALL_SCRIPT instead of CP

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

- Update to 1.5

PR:             ports/161020
Submitted by:   Dax Labrador <semprix@gmx.com> (maintainer)

- Update maintainer's address [1]
- Remove MD5 checksum while I am here

PR:             ports/156141 [1]
Submitted by:   Dax Labrador <semprix AT gmx.com> (maintainer)

- Update MASTER_SITES

PR:             144693
Submitted by:   Dax Labrador <semprix@bsdmail.org> (maintainer)

Provide a fast way to delete entries from OpenSSH's known_hosts
file. This is a simple automation of the things normally done by
the user when having an "offending key" in his/her known_hosts file
caused by a changing host key of the destination.

WWW:    http://unssh.sourceforge.net/

PR:             ports/137254
Submitted by:   Dax Labrador <semprix at bsdmail.org>