[Fieldtrip] Lighting Patch for Fieldtrip

Hello Folks, I've attached patch that will allow FieldTrip full access to omni, spot, and directional lights with varying parameters. It works much the same way as geometry does. See examples.hs for neat examples (the LegacyAdapterAnim.hs file is required for the examples and is different from the one I posted earlier). I'll be updating the ticket (http://trac.haskell.org/FieldTrip/ticket/16) shortly. David -- David Sankel