* Fixed a segfault in yuv_End() in video_yuvmmx.c
* Fixed the "Gdk-ERROR **: BadCursor" bug in the x11 and xvideo plugins
* Fixed a segfault in SetBufferPicture() in video_output.c. This segfault
    only happened with the xvideo plugin because this one is not using
    SetBuffers().

PS: The last fix broke the overlay output of SDL (black screen) I will
  investigate this later on.