[ODE] problems with amotor

[Geoff Carlton]

I've used AMotors only briefly, to make a capsule-shaped character stand 
upright.  For most of the previous post's questions, the answers are 
probably - if you want it, you've got to extend ode yourself.  A bit of 
a pain, but thats what you get with a free library.

I dislike Euler angles, and hence always used the user mode.   It worked 
ok for me - you just have to provide your own axis vector and then 
supply the desired turning velocities.  There may be others who have 
used it in the other modes and lived to tell the tale, I don't know.  I 
think the basic problem is that we're bad at rotation math, matrix 
operations, and euler angles (I know I am), and since the AMotor exposes 
that stuff directly its hard to get a grip on it.

Geoff