Makes testing parameters specified with AddTest non-const again when
passed to test functions. This allows test functions to update their
parameters during execution and is particularly useful for tests
which use those parameters to accumulate statistics, error counts,
etc. without resorting to global variables.
This is where most people will expect to find license information. The
COPYING_LBNL_HDF5 file has also been renamed to LICENSE_LBNL_HDF5.
The licenses are unchanged.
* Replace support.hdfgroup.org URLs for alternative COPYING file
locations in copyright headers with https://www.hdfgroup.org/licenses.
Replace support.hdfgroup.org URL for alternative COPYING_LBNL_HDF5
with github URL.
Tweak chkcopyright script for change from UICOPYRIGHTSTR to
THGCOPYRIGHTSTR.