Based on the mplayer package, which will be changed to use this.
Same for the gmplayer package.
The documentations are not longer installed twice if you install mplayer
and gmplayer at the same time.
The share package also adds the fonts to display the subtitles and timer.
Fixes pkg/17004, by using one DIST_SUBDIR for both mplayer and gmplayer
(this was allready added in my copy before the pr come in).
