GitLab

(mh-variant-set-variant, mh-variant-p, mh-profile-component)
(mh-variant-set, mh-variant, mh-scan-format-file): Fix typo in
docstring.

(mh-variant-info,mh-variant-mu-mh-info)
(mh-variant-p, mh-profile-component, mh-variant-set, mh-variant)
(mh-scan-format-file): Rename variant mu-mh to gnu-mh and be explicit
about GNU mailutils MH in docstrings (with thanks to Darel
Henman) (closes SF #1768928).