remove KClipboardSynchronizer from the public API. it was only used by KApplication and klipper, and the latter only used one feature. instead add the ability to clipboard sync on/off in kapplication and make kclipboardsynch an implementation detail in kdeui/kernel =)
also break out KSessionManaged from kapplication.[h|cpp] and rename it to KSessionsManager so it sounds a bit more like english.
(hopefully) fix a crash in kapplication related to the iconloader being access in KApplication::parseCommandLine