(Man-reuse-okay-p): Doc fix.

(Man-reuse-okay-p): Doc fix.
(Man-filter-list, Man-heading-regexp): Fix patterns.
(Man-first-heading-regexp, Man-find-section): Likewise.
(Man-getpage-in-background): Don't print ellipsis.
(Man-bgproc-sentinel): Preserve match data.
(Man-build-references-alist): Preserve restriction.
(Man-bgproc-sentinel, Man-build-section-alist): Bind case-fold-search.
(Man-next-section, Man-previous-section, Man-find-section): Likewise.
(Man-goto-page): Fix interactive declaration.