Better order of preference for vsync method.
Better order of preference for vsync method.

oktayacikalin/pyglet,theblacklion/pyglet,theblacklion/pyglet,oktayacikalin/pyglet,mammadori/pyglet,oktayacikalin/pyglet,oktayacikalin/pyglet,oktayacikalin/pyglet,mammadori/pyglet,theblacklion/pyglet,mammadori/pyglet,theblacklion/pyglet,mammadori/pyglet,theblacklion/pyglet