* locale/hashval.h (compute_hashval): Use prototype defn.
(hashval_t): New macro, defined to unsigned long int
if not already defined.
(compute_hashval): Return hashval_t instead of unsigned long int.
* locale/loadarchive.c (hashval_t): New macro.
* locale/programs/locarchive.c: Include hashval.h directly instead
of simple-hash.h.
(compute_hashval, hashval_t): Define these macros first.
(insert_name): Use archive_hashval instead of compute_hashval.
(add_locale, delete_locales_from_archive): Likewise.