(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.
+ make sure that the desktop system is still inactive.
(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