libxul and ipc options have been removed and we can't disable them now. This is now throwing an error but we should probably remove this code from our code when the transition period will be over.
Yeah, this is just temporary so that people realize that they're gone.
Tentatively assigning to Mitch.
MOZ_IPC will go away in bug 639754, I can do the same for MOZ_ENABLE_LIBXUL if Mitch and Kyle don't mind :)
I believe this is now fixed.