GL: update glext to svn 32957

This brings in defines from GL_EXT_window_rectangles and fixes the
glClearNamedFramebufferfi definition.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: "11.2 12.0" <mesa-stable@lists.freedesktop.org>
1 file changed