New COLLADA flex sample based on Away3D

A COLLADA viewer based on modified version of Away 3D. The component was put together to support viewing 3D models based on the COLLADA standard within a Flex application. Some of the changes included: Implement a flex component for the AWAY3d rendering engine; Hover/Zoom navigation support using custom targeted hover camera (hold down shift OR ctrl on top of the model viewer); Added simple material and lighting support to the COLLADA parser; Added materials preloading support.