(Info-mode-hook): Obey obsolete `Info-fontify'.

(Info-mode-hook): Obey obsolete `Info-fontify'.
(Info-find-in-tag-table-1): Remove unused vars.
(Info-display-images-node): Remove unused var paragraph-markers.
(Info-header-line): Remove.
(Info-select-node): Don't set it.
(Info-search): Remove unused var `current'.
(Info-follow-reference): Remove unused var `beg'.
(Info-extract-menu-node-name): Remove unused var `i'.
(Info-complete-menu-item): Use `with-current-buffer'.
(Info-index): Remove unused var `rnode'.
(Info-mode): Set header-line-format to check text-properties directly.
(Info-find-emacs-command-nodes): Remove unused var `found' and `exact'.
(Info-fontify-node): Use `push'.
(Info-speedbar-hierarchy-buttons): Use `dolist'.
(Info-speedbar-goto-node, Info-speedbar-fetch-file-nodes):
Check the return value of `string-match'.
(Info-speedbar-fetch-file-nodes): Factor out common code.