[flexcoders] implement stage3d while maintaining fp 10.1 support

[Csomák Gábor]

Hi!
At my company, there is a policy to support 10.1 flash player. I was
wondering, if there is a way to implement stage3D if the client is capable,
(else display on stage), with Flex 4.1A SDK to compile the AS3 project?
Thanks,
Gabor