wip/semi 1.14.6nb10 NetBSD

(github version of SEMI) SEMI is a library to provide MIME feature for GNU Emacs. MIME is a proposed internet standard for including content and headers other than (ASCII) plain text in messages. RFC 2045 : Internet Message Bodies RFC 2046 : Media Types RFC 2047 : Message Header Extensions RFC 2048 : MIME Registration Procedures RFC 2049 : MIME Conformance SEMI has the following features: - MIME message viewer (mime-view-mode) (RFC 2045 .. 2049) - MIME message composer (mime-edit-mode) (RFC 2045 .. 2049) MIME message viewer and composer also support following features: - filename handling by Content-Disposition field (RFC 1806) - PGP/MIME security Multiparts (RFC 2015) - application/pgp (draft-kazu-pgp-mime-00.txt; obsolete) - text/richtext (RFC 1521; obsolete; preview only) - text/enriched (RFC 1896) - External method configuration by mailcap (RFC 1524)