* Implement support for loading of Virtual File Drivers as plugins
Fix plugin caching for VOL connector and VFD plugins
Fix plugin iteration to skip paths that can't be opened
* Enable dynamic loading of VFDs with HDF5_DRIVER environment variable
* Temporarily disable error reporting during H5F_open double file open
* Default to using HDstat in h5_get_file_size for unknown VFDs
* Use macros for some environment variables that HDF5 interprets
* Update "null" and "ctl testing" VFDs
* Update clang config to put H5E_BEGIN_TRY / H5E_END_TRY on separate lines, empty C++ methods on separate lines, understand that ALL_MEMBERS / UNIQUE_MEMBERS are foreach macros, and properly skip the 'config' directory in the find command without emiting a warning
* Committing clang-format changes
Co-authored-by: github-actions <41898282+github-actions[bot]@users.noreply.github.com>
* Modify temporary rpath for testing in java example scripts.
* Update URL in source file Copyright headers for web copy of COPYING
file - src and test directories.
