Add support for GL_ARB_shading_language_420pack so we don't have to binding sampler locations. Also add support for GL_ARB_separate_shader_objects which doesn't currently work for some reason....investigating.

Source/Core/VideoCommon/Src/VideoConfig.h

@@ -168,6 +168,8 @@ struct VideoConfig
 		bool bSupportsFormatReinterpretation;
 		bool bSupportsPixelLighting;
 		bool bSupportsGLSL;
+		bool bSupportsGLSLBinding;
+		bool bSupportsGLSLLocation;
 	} backend_info;
 };