Add Config Toggle to Enable / Disable HRTF Bools in OpenAl

[KAMKEEL]

Two toggles are now turned off by default to disable HRTF
Fixed the config to lowercase else it will appear in the config like this:

openglContext {
}


openglcontext {
    # Enable KHR_debug in the OpenGL context for advanced debugging capabilities [default: false]
    B:debugContext=false

    # Make the framebuffer double-buffered (will cause visual artifacts if disabled) [default: true]
    B:doubleBuffer=true

    # Enable GL_KHR_no_error to use faster driver code, but which can cause memory corruption in case of OpenGL errors [default: false]
    B:noError=false

    # Make the framebuffer use the sRGB color space [default: false]
    B:srgb=false
}