Import mupen64plus-extraplugins-2.0.0 as wip/mupen64plus-extraplugins.

Additional Mupen64Plus plugins. This bundle includes the following plugins:

 * mupen64plus-rsp-z64;
 * mupen64plus-video-arachnoid;
 * mupen64plus-video-glide64;
 * mupen64plus-video-z64;
+mupen64plus-extraplugins