recentf and directories

[geotal]

Two features that would be very useful in recentf and are not present:

1.  Ability to include in the recent files list the recently visited
    directories.  Or better yet, a submenu with the recently visited
    directories. I find myself having to use bookmarks for frequently
    used directories, which is not the most efficient strategy.

2. Having an ignore regexp:  files that match not to be included in
   the recent files list. .bbdb, .eld (gnus), etc. are not explicitly
   visited and don't need to be there.

Thanks,

geotal