* [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