extras/gator/phenotype.m:
Replace a call to an obsolete predicate.
extras/mopenssl/mopenssl.m:
Pass allocation site ids to calls to MR_make_string.
Avoid warnings from the C compiler about const qualifiers
being discarded.
extras/show_ops/show_ops.m:
Conform to changes to the term module's representation of
integers.
Discussion of these changes can be found on the Mercury developers
mailing list archives from June 2018.
COPYING.LIB:
Add a special linking exception to the LGPL.
*:
Update references to COPYING.LIB.
Clean up some minor errors that have accumulated in copyright
messages.
