[ODE] Cylinder support

[David Walters]

> Will it support Cylinder-Cylinder collisions?

Erm, no - not yet. We were just talking about tidying up the bug/feature lists.

Not that this feature wouldn't be welcome - but it's been said many
times before that we're all kind of waiting for someone to go ahead
and write this function. I'm not aware of anyone actually working on
it right now... please correct me if i'm wrong.

Also, i've gone ahead and made that change to remove the
'dCylinder_Enabled' build option because it wasn't a very major change
in the end. There didn't seem to be any mention of it on the Wiki
either, so it's just a few changes to SVN to bid this farewell.

Regards,
Dave