hdf5_ep

* Simplify code to avoid using a boolean to free MPI types
* Don't free builtin MPI_BYTE MPI type
* Simplify default use of MPI_BYTE
* Added release note for MPI type fix
* Clean up private / package / static namespace issues (function naming, which
    header file, FUNC_ENTER / LEAVE, etc).  Removed remaining personal email
    addresses from library source code (still needs cleaned from other directories).
    Misc. warning, style, and whitespace cleanup.
* Switch H5VM inline routines back to single underscope and put a comment in their header about this naming
* Move H5T_vlen_reclaim to package scope
* Correct typos w/HGOTO_DONE & HGOTO_ERROR
* Minor fixes to align w/state of 1.12 code
* Add ifdef blocks to S3/HDFS test
* Add hypen to subrelease regex
* Condition if (H5_VERS_SUBRELEASE) is incorrectly false when
    H5_VERS_SUBRELEASE is 0, a valid value for H5_VERS_SUBRELEASE.
    Updated to if (${H5_VERS_SUBRELEASE} STREQUAL "") with corresponding
    reversal of action statements to avoid NOT.
* Add special case when H5_VERS_SUBRELEASE is 0
* Revert H5_VERS_SUBRELEASE check
* Add back function for VERIFY_EXTERNAL_CONSOLIDATION
* The version string has a second use for packaging
* MinGW uses "MinGW Makefiles"
* Remove redundant calls to set the metadata cache tag
* Adds HDFS VFD stubs to prevent binary compatibility problems
* Revert "Removed commeted out code from H5C_dump_coll_write_list()"

    This reverts commit eb75dc1bb02e13902d73a36caafe763eea585d02.

* Revert "    Checkin of fix for CGNS bug"

    This reverts commit 94c34773ceae5b30c4afb227d0385ebf4ab6ce28.

* Update buffer count
* Fix mis-merge from develop
* Add release note for collective metadata fix
* Bug fix to allow pass-through VOL connectors to set DXPL properties (like requesting collective operations) on dataset I/O
* Correct COPYING path
* Add zlib and szip pages
* Snapshot version 1.12 release 1-2.  Update version to 1.12.1-3
* Fix memory sanity check option in CMake
* Add clang-format changes from develop.
* Src file format preventive updates
* warning format fixes and define name from develop
* define name
* Source formatted
* Add action options