Plugin manager: deletion option.
If there are symbolic links to external directories inside a plugin's directory hierarchy, the plugin manager's deletion function deletes the directories to which the links point. For instance, in the case of fckgLite, there are links to data/media in fckeditor/userfiles. When the plugin manager delets fckgLite it also deletes the media directory's contents.
Attached is a git patch which addresses this problem.