Provide the option to automatically update existing bookmark files on stop, without creating ones that don't already exist.
Idea from FS#6272, but implemented differently. If you set "Update on stop" then it will check if the bookmark file exists on stop, and if so, write a new one without prompting. If the file doesn't exist, it will do whatever the "Bookmark on stop" setting tells it to do.
This works quite well if you have an audiobook/podcast/etc folder/playlist: just bookmark it manually once and it will get bookmarked automatically after that, without creating bookmarks for regular music.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27294 a1c6a512-1295-4272-9138-f99709370657