GitLab

(mh-lib-progs, mh-nmh-p): New vars.
(mh-find-progs): Set mh-lib-progs along with other vars.
(mh-path-search): New arg FUNC-P; if specified, use that instead
of mh-file-command-p.
(mh-install, mh-exec-lib-cmd-output): Use mh-lib-progs.