glx: Provide glvnd wrapper for glXSwapIntervalEXT
When using glvnd, this function needs to be exposed through getDispatchAddress or libglvnd will not find it.
Signed-off-by: Keith Packard keithp@keithp.com
When using glvnd, this function needs to be exposed through getDispatchAddress or libglvnd will not find it.
Signed-off-by: Keith Packard keithp@keithp.com