Setting lines from ccleaner.ini:
(App)Custom Folders=True Include1=PATH|C:\|*.tmp|REMOVESELF
Now CCleaner will delete not only *.tmp files and empty folders but all junction points and symliks on C: without any message.
I check this with Ccleaner ver. 3.21.1767, 4.01.4093, 4.16.4763, Windows XP and Windows 7.