libeplayer3: subtitles will now be displayed by neutrino

Conflicts:
	generic-pc/playback.h
	libeplayer3/Makefile.am
	libeplayer3/container/container.c
	libeplayer3/container/container_ffmpeg.c
	libeplayer3/include/container.h
	libeplayer3/include/subtitle.h
	libeplayer3/include/writer.h
	libeplayer3/output/output.c
	libeplayer3/output/output_subtitle.c
	libeplayer3/output/writer/writer.c
	libeplayer3/playback/playback.c