added option to cache visited directories, for search and faster loading. cache is kept for one day
added option to cache visited directories, for search and faster loading. cache is kept for one day


git-svn-id: 6ac5796aeae0cef97fb47bcc287d4ce899c6fa6e@48530 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33

jordemort/e17,jordemort/e17,jordemort/e17