Add initial video playback support for Ogg Theora videos (resolves issue #66.)

The basic APIs are:

video = love.graphics.newVideo("myvideo.ogv")

love.graphics.draw(video, ...) -- Video objects are Drawables.

video:play(), video:pause()

video:getDuration(), video:tell(), video:rewind(), video:seek(seconds)

video:getSource()

video:getWidth(), video:getHeight(), video:setFilter(min, mag)

More advanced APIs include video:setSource(source), video:getStream(), and videostream:setSync.

To use a custom pixel shader when drawing a Video, call the new TexelVideo(texcoords) function instead of Texel(texture, texcoords) in order to get the pixel colors of a video frame.

src/scripts/boot.lua

@@ -369,6 +369,7 @@ function love.init()
 			font = true,
 			thread = true,
 			window = true,
+			video = true,
 		},
 		console = false, -- Only relevant for windows.
 		identity = false,
@@ -425,6 +426,7 @@ function love.init()
 		"system",
 		"audio",
 		"image",
+		"video",
 		"font",
 		"window",
 		"graphics",