Remove dns/powerdns-devel port per maintainer approval

As dns/powerdns was just updated to version 3.4, there was a decision to
be had to disable the -devel version or just remove the port altogether.
Due to the frequency of releases and the manner on how the upcoming
version is tested, it made sense to retire the port (at version 3.3).

PR:		194508
Submitted by:	maintainer (Ralf van der Enden)
x11-fm/ultracopier: Remove pkg-plist, unmask installation commands

With the new ability to use full paths, the plist can be simplified.
This fixes a build issue on DragonFly where the PLIST_SUB was using
an unevaluated variable (actually containing things like curly
brackets), and this fix was preferable to := evaluations.
net/nast: fix -lpthread on DragonFly, take 2
x11-fm/ultracopier: Work around PLIST_FILES limitation

PLIST_FILES won't support keywords, forcing this port to have a two-line
pkg-plist to work around this limitation.
- Update from 2.8 to 2.9
- Use options helpers
- Take maintainership
x11-fm/ultracopier: Remove pkg-plist, unmask installation commands

With the new ability to use full paths, the plist can be simplified.
This fixes a build issue on DragonFly where the PLIST_SUB was using
an unevaluated variable (actually containing things like curly
brackets), and this fix was preferable to := evaluations.
x11-fm/ultracopier: But really pkg-plist still isn't needed

USES=desktop-file-utils handles the keywords listed in pkg-plist
This was done on previous commit, but I committed the wrong commit
message and I want to document why pkg-plist was removed again.

Thanks:		tijl
- Update to 1.7.78
- Update maintainer's email

PR:	194461
Submitted by:	Anton Sayetsky <vsjcfm@gmail.com> (maintainer)
- Pass maintainership to submitter

PR:	194576
Submitted by:	Jason Harris <jharris@widomaker.com>
Update to version 1.17.20
- Update to 0.92.1

PR:	194516
Submitted by:	Neel Chauhan <neel@neelc.org> (maintainer)
New port: sd-agent

Server Density Agent for FreeBSD

Monitor CPU, memory, disk usage, network, Apache, MySQL + more via the
ServerDensity platform.

WWW: https://www.serverdensity.com/
- Use the proper python version value within a single port build

  If a port requests a different python version from the one being the
  default or provided at the command line, certain directories as well
  as plist entries will use the wrong python version value (the one
  being the default or provided at the command line), instead of
  the value, the port requests

Differential Revision:	https://reviews.freebsd.org/D963
With hat:	python@