[ODE] VS.NET build branch

[J. Perkins]

I haven't had much feedback on the new build system for visual studio,
but I want to get my local branch back on the trunk. Premake 3.1 is
going to be released today or tomorrow, and after that I am going to
merge the new build system into the trunk, and then I will fix up any
issues that arise.

I'm not worried about the project files, since people can always keep
doing what they are doing now. I am more concerned about the addition
of the ODE_API flag all over the place. So if you can, please have a
look and let me know if you run into any issues.

FYI, not all of the test applications run for me, but they fail in the
same way when I use the old makefile/configurator system. Here's what
fails:

   test_collision: Calls dDebug() at test_collision.cpp(975)

   test_crash: Works when built with gcc, but gives a stack overflow under
              VC at quickstep.cpp(748)

   test_joints: tests 221, 321, 600, 721, 722, and 741 all fail

   test_ode: "A*x = b+w, maximum difference = 3.433228e-005" in dTestSolveLCP()

Jason