PhysX GPU Support
PhysX GPU Support

Summary: Fixed the PhysX GPU code to now work. Requires the Cuda runtime environment to be installed on the computer. Also needs libPhysX3Gpu to be inside of the bin directory when running.

Test Plan: Tested using OpenSim on a linux 64 bit machine.

Reviewers: rlouden, martin, kboswell, ssirigam, clattin

Reviewed By: rlouden, martin, kboswell, ssirigam, clattin

Differential Revision: http://cr.irl.ucf.edu/D356

ucfistirl/physx-wrapper,ucfistirl/physx-wrapper