Comment # 6 on bug 1060072 from Ralf Friedl

Could you also move /usr/lib/virtualbox/VBoxSDL.so from package virtualbox to
virtualbox-qt? While VBoxSDL doesn't pull in the Qt libraries, it needs libSDL.

Virtualbox documentation at https://www.virtualbox.org/manual/ch09.html says
"VBoxSDL is currently primarily used internally for debugging VirtualBox and
therefore not officially supported", so nobody should miss it if it is moved to
virtualbox-qt.

For some reason VBoxHeadless also loads libICE, libSM, libX11, libXau, libXt
and libxcb. It would be nice to have this dependency also removed, but it is
probably not as easy as the other files.