Package inversion is not present on the Emacs branch, and right now it
is giving an error while compiling cogre...
So the question is, should I just delete all traces of inversion on
CEDET, should I solve the error (I think it's due to compile order), or
should the calls to inversion be replaced with checks from an
"And it's much the same thing with knowledge, for whenever you learn
something new, the whole world becomes that much richer."
-- The Princess of Pure Reason, as told by Norton Juster in The Phantom