a) Launch quick starter, Close all OOo windows, leaving just the quick starter
running. Use Open File, leave the file dialog open. Now use Disable systray
quickstarter. Ka-boom. We disable Exit and Open in this scenario, but not
disable. Presumably following the modal logic, we should disable "Disable" while
the open dialog is open as well

b) "soffice -quickstart" doesn't do anything when the gtk quick starter is
built. The code in desktop that handles "-quickstart" doesn't know about it.

c) Launch quick starter, Close all OOo windows. Now use quick starter's exit
menu. That gives exit_quickstarter_cb->ShutdownIcon::terminateDesktop.
terminateDesktop will trigger the unload timers. There's no particular reason
why those timers mightn't trigger before exit_quickstarter_cb completes, causing
the plugin_shutdown_sys_tray to be called after the library has been unloaded.
At least that's what I see happening. Moving plugin_shutdown_sys_tray before the
call to terminate should be fine.

d) In the case where the quick starter is the only owner of the desktop, and we
call XDesktop::removeTerminateListener then our ref count drops to 0 and we
disappear, so pInst->m_bListenForTermination = true; writes to a deleted object
according to valgrind anyway.