user32: Make sure there is space for at least 6 items in a combo dropdown without forcing it to be at most 6 items as well.

imm32: Remember to unset the hwnd for a context when that hwnd is associated with a different context.

Mostly NOP regarding existing functionality, but makes it possible to skip light 
activation when it's not needed (like when clearing).

services: Automatically start boot-start, system-start and auto-start services when services.exe is started, instead of in wineboot.exe.