Nebula3 NaCl Demo

Simple technology demo (and performance test) of the Nebula3 engine ported to the Google Native Client platform. 3D assets courtesy of Drakensang Online (http://www.drakensang.com). 0.0.7 updates: - further size reductions - more aggressive optimization flags 0.0.6 updates: - reduced input latency 0.0.5 updates: - download size reduction - control number of dragons (for simple benchmarking)