New version of RegalPpca based on RegalClientState.h
Merge snations branch
Emscripten now working for dreamtorus.
Initial scaffolding for GLX emulation on EGL/WGL/CGL.
Ppca refinements.
Add GL_NV_blend_equation_advanced and GL_NV_blend_equation_advanced_coherent support.
RegalX11.cpp added for fake X11 purposes for GLX emulation.
GLEW refresh.
Fixups for REGAL_SYS_EMSCRIPTEN_STATIC mode.