I'm replying to my own post:
Reinstalled Windows 8 x64 RTM on VMware Player 5, and OpenGL hardware acceleration is working again. Obviously, I had installed Windows 8 on VMware Player 4, which it really wasn't tested for. The OpenGL hardware acceleration was working for that instance. The problem occured when migrating the virtual machine to VMware Player 5.
I don't really know if this path will be encountered by others, but I was concerned until I installed directly to VMware Player 5.
Dave