Add omn-mode.
* omn-mode.el: Fix up copyright notice, plus minor cleanup.
(omn-obsolete-electric-indent): New var.
(omn-mode-map): Obey it.
(omn-mode-entity-keywords, omn-mode-property-keywords): Move before use to
satisfy the byte-compiler.
(omn-determine-line-indent): Don't save-match-data for no reason.
(auto-mode-alist): Use \\' to match end of file name.
(omn-font-lock-defaults): Use regexp-opt.
(omn-mode-syntax-table): Don't use "w" syntax for "_".
(omn-mode): Move make-local-variables to their corresponding setq.
Set electric-indent-chars.
* omn-mode.el: Fix first line style.