all: drop support for FreeBSD 13.2 which reached EOL today

Thanks again to jbeich for noticing various things I overlooked.

Reviewed by:	acm, ashish, eduardo, ehaupt, eugen, jbeich, martymac, mat,
nobukata, sunpoet, tagattie, yuri, arrowd, kde
Differential Revision:	https://reviews.freebsd.org/D45141

multimedia/bcmatroska2: Bump and drop GL_TAGNAME

Bump for update of net/bctoolbox

Approved by:		bofh (maintainer, by private message)
Differential Revision:	https://reviews.freebsd.org/D41227

*/*: Fix build with llvm16 on 13.2-STABLE

As like as HEAD(14.0-RELEASE) llvm16 was merged in base for 13.2-STABLE
with the OSVERSION 1302507.

- Utilize USE_CXXSTD=c++14 or similar solution where applicable
- Update conditionals to addtionally check for OSVERSION greater than
  1302507 and less than 1400000

Approved by:	portmgr (blanket)
Sponsored by:	The FreeBSD Foundation

bsd.sites.mk: Update all ports using USE_GITLAB

Replace GL_COMMIT by GL_TAGNAME in all ports. The new GL_TAGNAME is
backwards-compatible (accepting any commit hash as before), but also
understands an actual tag name. Moving to tag names where appropriate is
left to individual ports' maintainers.

Approved by:		portmgr (tcberner, mentor)
Differential Revision:	https://reviews.freebsd.org/D37077

multimedia/bcmatroska2: Fix build with llvm16

Sponsored by:	The FreeBSD Foundation

multimedia/bcmatroska2: Update version 0.23=>5.2.1

- Adopt port
- Add LICENSE BSD3CLAUSE
- Change MASTERSITES to https://gitlab.linphone.org/BC GITLAB

Changelog:
https://gitlab.linphone.org/BC/public/bcmatroska2/-/tags/5.2.1

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.

One more small cleanup, forgotten yesterday.
Reported by:	lwhsu

Remove # $FreeBSD$ from Makefiles.

Change cmake default behaviour to outsource.

Ports that build out of source now simply can use "USES=cmake"
instead of "USES=cmake:outsource". Ports that fail to build
out of source now need to specify "USES=cmake:insource".

I tried to only set insource where explictely needed.

PR:		232038
Exp-run by:	antoine

Update the Linphone stack and drop maintainership.

Linphone uses Qt5 now instead of GTK2.

audio/bcg729:
- switch to cmake, required by net/mediastreamer
- download distfile instead of using gitlab
- fix license: source code allows later GPL version

audio/msbcg729: deleted, net/mediastreamer contains a G.729 codec now
audio/msilbc: deleted, superseded by multimedia/mswebrtc
deskutils/belcard: version 1.0.2
multimedia/bcmatroska2: version 0.23
multimedia/msopenh264: version 1.2.1
multimedia/mswebrtc: version 1.1.1
multimedia/msx264: deleted, superseded by msopenh264
net/bctoolbox: version 0.6.0
net/belle-sip: version 1.6.3
net/liblinphone: version 3.12.0
net/linphone: version 4.1.1 + upstream Qt 5.11 patches
net/mediastreamer: version 2.16.1 + upstream libsrtp2 patch
net/ortp: version 1.0.2 + bump dependent port devel/libosmo-abis
security/bzrtp: version 1.0.6
textproc/belr: version 0.1.3