deeprunner 0.2

Changes

• SGI graphics hardware detection to set reasonable default graphics options
• windows: fix audio latency
• fixed texture clamping in logo screen
• SGI VPro work around hardware bug to fix missing laser beams
• a number of minor build fixes

DeepRunner Game Jam version

This is the version of Deep Runner, as it was submitted to the Retro Game Jam 6 at the end of the deadline.