Now using glsloptimizer to parse and rewrite shaders.
Major enhancements to the state web server.
Added state-based shader instancing to avoid recompiles.
Fixed issue #113 - Possible bug with REGAL_STATISTICS
Corrected handling of GL_POINT_SIZE_MAX state in RegalState.
Refreshed apitrace, civetweb, libpng, and GLEW from upstream.