Fixed a few warnings in cubegeom tests
Switched off antialiasing by default for WebGL contexts.
Allowed customization of context attributes through Browser.createContext().
Added myself to AUTHORS
Implemented antialiasing for GLFW contexts.
The WebGL context is created with antialiasing if GLFW_FSAA_SAMPLES is bigger than 1.
Added multisampling support in GLUT
Implemented SDL_GL_SetAttribute and SDL_GL_GetAttribute.
Implemented MSAA for SDL.
Switched on MSAA in EGL.
Minor fixes and improvements
Changed EGL_SAMPLES to 4 (2x2 MSAA)
Merge branch 'antialiasing' of github.com:wsmind/emscripten into incoming

Conflicts:
	AUTHORS