(fortran-comment-line-start): Renamed from comment-line-start.

(fortran-comment-line-start): Renamed from comment-line-start.
(fortran-comment-line-start-skip): Renamed from
comment-line-start-skip.
(fortran-mode-map): Use renamed functions.  Add manual and custom
entries to menu.
(fortran-mode-hook): Customize.
(fortran-comment-indent-function): Renamed from fortran-comment-hook.
(delete-horizontal-regexp): Function deleted.
(fortran-electric-line-number): Simplified.
(fortran-beginning-of-subprogram): Renamed from
beginning-of-fortran-subprogram.
(fortran-end-of-subprogram): Renamed from end-of-fortran-subprogram.
(fortran-mark-subprogram): Renamed from mark-fortran-subprogram.
(fortran-previous-statement, fortran-next-statement): Simplified.
(fortran-blink-match): New function.
(fortran-blink-matching-if, fortran-blink-matching-do): Use it.
(fortran-indent-to-column): Don't use delete-horizontal-regexp.
(fortran-find-comment-start-skip, fortran-is-in-string-p): Use
line-end-position.
(fortran-fill): No longer interactive.  Simplified.
(fortran-break-line): Simplified.
(fortran-analyze-file-format): Use char-after, not looking-at.