[ODE] TriMesh support and OPCODE added to ODE core

[Pierre Terdiman]

> because calling "false(...)" is an error in gcc ("can not use false as
> a function"). i don't see why it would be valid C++.

Of course, but, errr...... you're not supposed to call the function yourself
!

It should always be used as "return SetIceError()" in Opcode, hence compile
as "return false", period.

Otherwise it wouldn't have compiled indeed.

Once again it's just a quick hack to extract Opcode from my own big-messy
framework. Actually the best thing to do might be to replace it with your
own error handler..... Oh, well.