Remove a few expired ports:

2020-12-31 audio/ardour: Uses Python 2.7 version of scons, and Python 2.7 which
is EOLed upstream
2020-12-31 audio/mixxx21: Uses Python 2.7 version of scons, and Python 2.7 which
is EOLed upstream
2020-12-31 databases/arangodb32: Uses Python 2.7 which is EOLed upstream
2020-12-31 databases/arangodb33: Uses Python 2.7 which is EOLed upstream
2020-12-31 devel/bzr: Uses Python 2.7 which is EOLed upstream
2020-12-31 devel/chromium-gn: Uses deprecated version of python, use devel/gn
instead
2020-12-31 devel/mongo-cxx-driver: Uses Python 2.7 version of scons, and Python
2.7 which is EOLed upstream

Revert r559792 to unbreak INDEX and bulk -a
It seems a lot of reverse dependencies were missed

With hat:	portmgr

Remove most expired ports that depend on Python 2.7:

Exceptions are:
- mail/mailman, our listservers still use it
- www/chromium, solely because of popular demand,
  upstream is (slowly) working on porting it to Python 3
- ports that have actual patches for Python 3 against
  them (Cinnamon and a few unrelated other ports)
- llvm70 and qt5-webengine because they seem to have a lot
  of dependencies which need further analysis
- sysutils/uefi-edk2-bhyve because bhyve seems to use them
- python2 and python27 themselves

I'm sure there will be complaints, but the nice thing about
a version control system is that we can revert and adjust things.

Sanitize COMMENT per Section 5.6 of the FreeBSD Porter's Handbook (part 1).

Fix more fallout for bundled rocksdb after the LLVM 10 import

In file included from rocksdb/utilities/backupable/backupable_db.cc:16:
rocksdb/util/channel.h:35:33: error: no matching constructor for initialization
of 'std::lock_guard<std::mutex>'
    std::lock_guard<std::mutex> lk(lock_);
                                ^  ~~~~~
/usr/include/c++/v1/__mutex_base:90:14: note: candidate constructor not viable:
1st argument ('const std::mutex') would lose const qualifier
    explicit lock_guard(mutex_type& __m)
_LIBCPP_THREAD_SAFETY_ANNOTATION(acquire_capability(__m))
             ^
/usr/include/c++/v1/__mutex_base:100:5: note: candidate constructor not viable:
no known conversion from 'const std::mutex' to 'const
std::__1::lock_guard<std::__1::mutex>' for 1st argument
    lock_guard(lock_guard const&) _LIBCPP_EQUAL_DELETE;
    ^
/usr/include/c++/v1/__mutex_base:94:5: note: candidate constructor not viable:
requires 2 arguments, but 1 was provided
    lock_guard(mutex_type& __m, adopt_lock_t)
_LIBCPP_THREAD_SAFETY_ANNOTATION(requires_capability(__m))
    ^
1 error generated.

net/ceph* will still not build because Clang crashes but at least
it goes beyond the above error.

Unbreak after r523104

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

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

Remove compatibility code for FreeBSD < 11.2 from all ports.

Simplify some ports where DragonFlyBSD no longer needs to be special-cased.
Submitted by:	rene
Reviewed by:	bapt, jbeich
Differential Revision:	https://reviews.freebsd.org/D17724

Add DOCS options to ports that should have one.

Also various fixes related to said option.

PR:		230864
Submitted by:	mat
exp-runs by:	antoine

Adapt ${name}_limits to the new resource limiting mechanics for services

While on it:
- Pet portlint

PR:		227221
Submitted by:	0mp
Approved by:	maintainer timeout

databases/arangodb33: Update 3.3.3 -> 3.3.7

Port changes:
* Update maintaner e-mail galu@packetdam.com -> dev@dudu.ro
* Patch updates and additions

PR:		227637
Submitted by:	Vlad Galu <dev@dudu.ro> (mantainer)

New port: databases/arangodb33: ArangoDB, branch for 3.3.X series, version 3.3.3

Forked from databases/arangodb32.
https://www.arangodb.com/

PR:		224998
Submitted by:	Vlad Galu <dev@dudu.ro>
Approved by:	tcberner (mentor)
Differential Revision:	https://reviews.freebsd.org/D13831