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/modules/filesystem/wrap_Filesystem.h

@@ -23,6 +23,7 @@
 
 // LOVE
 #include "common/runtime.h"
+#include "File.h"
 #include "FileData.h"
 
 namespace love
@@ -38,6 +39,7 @@ namespace filesystem
  * May trigger a Lua error.
  **/
 FileData *luax_getfiledata(lua_State *L, int idx);
+File *luax_getfile(lua_State *L, int idx);
 
 bool hack_setupWriteDirectory();
 int loader(lua_State *L);