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)

lang/mono: update to version 5.2.0.215 (and enhance USES=mono)

Highlights:
 - New Roslyn compiler for C# available
 - Improved support for nuget packages in USES=mono

General:
 - fix pkg-plist: mono now produces '.pdb' debug files instead of '.mdb'
 - bump all dependant ports

USES=mono:
 - properly handle caching of nuget packages
 - add support for multiple feeds for nuget packages
 - add support for nuget dependencies in a separate file
 - add support for paket packages

Fix build with mono 4.4.

Some assemblies have been relocated, so adjust files path to point to the
correct location.

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

With hat:	portmgr
Sponsored by:	Absolight

- Fix build with mono 4
- Remove redundant depends

Reported by:	pkg-fallout

Cleanup plist

Convert to USES=mono
Cleanup

- Stage support

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

Convert USE_GNOME=pkgconfig to USES=pkgconfig
While here:
- Trim headers
- Convert:
  * USE_GNOME=gnomehack -> USES=pathfix
  * USE_PERL5 -> USES=perl5
  * USE_GMAKE -> USES=gmake

At the moment 1385 ports use BUILD_DEPENDS= ${RUN_DEPENDS} and 450
ports use BUILD_DEPENDS:= ${RUN_DEPENDS}. This patch fixes ports that are
currently broken. This is a temporary measure until we organically stop using
:= or someone(s) spend a lot of time changing all the ports over.

Explicit duplication > := > = and this just moves ports one step to the left

Approved by:    portmgr

- Get Rid MD5 support

- Update URIs according to the new Banshee website location.

- Mark MAKE_JOBS_UNSAFE

Reported by:    pointyhat

- Update lang/mono to 2.4.
- Update a bunch of c# ports as well (gtksharp20, mono-zeroconf, tomboy,
gnome-desktop-sharp, gnomesharp20).
- Remove devel/monodoc as it is now included in lang/mono.
- Add www/mod_mono, an apache module serving ASP.net pages.
- Add www/xsp, a mono-based webserver.

PR:             ports/135248, ports/135249
Submitted by:   Romain Tartiere <romain@blogreen.org>

Turn over maintainership to mono@.

Sort packing list.

Add net/mono-zeroconf, a cross platform Zero Configuration Networking
library for Mono and .NET.