* [vcpkg ci:osx] Remove brew install

* add instructions for creating a new vagrant box

* fix the vagrant scripts for the new box

* finish fixing the setup

* [mecab jxrlib] fix ports for CI

mecab needed to use an actual ref that wasn't master,
and jxrlib needed a patch for xcode 12 CLTs.

Additionally, this fixes the mecab version to be a date, the date of the last commit,
since `1.0` is not the correct version (mecab doesn't have released versions)

* [many ports] fix compile with Xcode 12 CLTs

This mostly means fixing errors on implicit-function-declaration,
and removing some Werrors
* alac-decoder
* apr
* argtable2
* arrow
* hyperscan
* mcpp
* minizip
* mosquitto
* stormlib

* [many ports] even more Xcode 12 CLT fixes

* [jxrlib darknet] fix the last ports! (hopefully)

* CRs, plus minor wip changes to osx scripts

* [many ports] Updates 2019.05.24

* Update SHA512 and resolve conflict for ebml and matroska

* [avro-c]Fix build error caused by jansson upgrades.

* [xxhash]Update to the next version to fix build error.(xxhash issue:#179)

* Fix failures and undo asio

* [libyaml, grpc, miniz, paho-mqtt, sqlitecpp] Update patches

* Update REF

* Undo nvtt flann itk libtins aws-sdk-cpp openvdb vlpp xmsh changes

* [flann, fastcdr] Fix old patches and build error.

* [flann, fastcdr] Fix build error.

* Fix ensmallen uvatlas cppcms libplist failures and undo aws-c-common libopusenc arb taglib changes

* [dcmtk, draco, flatbuffers, forge, ftgl, mosquitto,nmslib, ogre] Update old patches and fix build error.

* fix libusbmuxd failures and undo xxhash paho-mqtt mongo-c-driver flann libffi

* fix libimobiledevice and undo qhull harfbuzz lcm libbson draco flatbuffers

* undo libmupdf forge kd-soap qca

* [mosquitto] Fix installation of import libs

* [arb][asio][aws-c-common][collada-dom][concurrentqueue][cryptopp][ebml] Revert trivial/undesired changes

* [fastcdr] Minimize patch

* [many ports] Revert trivial changes

* [libyaml] Switch to non-dist tag

* [sqlite-modern-cpp] Track master due to infrequent release

* [nano-signal-slot] Revert downgrade

* [openvpn3] Bump control version to account for portfile change

* [sqlite-modern-cpp] Fixup wrong hash

* [mosquitto] Commit missing patch