(desktop-files-not-to-save): New variable to exclude certain files -- magic

(desktop-files-not-to-save): New variable to exclude certain files -- magic
ftp names by default -- from being put into desktop files.
(desktop-save-buffer-p): Check file name also.
(desktop-save-buffer-p): For directories loaded by dired consider the
directory to be the file name.
(desktop-locals-to-save): Add line-number-mode to be saved when local.
(desktop-remove): In case the desktop file cannot be deleted make sure that
the desktop system is still inactivated.
(desktop-kill): In case an error occurs when saving the desktop, offer to quit
regardless.
(desktop-save-buffer-p): Disregard case when testing file and buffer names
against regexps.
(desktop-buffer-dired): Display a warning if a directory no longer exists.
(desktop-save-hook): New variable.
(desktop-save): Run desktop-save-hook.
(desktop-clear): Clear search history.
(desktop-internal-v2s): Be more explicit when encountering an unprintable
value.