* Strip HD prefix from string/char C API calls
* HD(f)(put|get)(s|c)
* HDstr*
* HDv*printf
* HD(s)(print|scan)f
* HDperror
But NOT:
* HDstrcase*
* HDvasprintf
* HDstrtok_r
* HDstrndup
As those are not C99 and have portability work-around
implementations. They will be handled later.
* Fix th5_system.c screwup
* 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.
