Merge commit '82f8eb5f'

* commit '82f8eb5f':
  jpeg2000: split off inverse MCT as Jpeg2000DSP

Conflicts:
	libavcodec/Makefile
	libavcodec/jpeg2000dec.c
	libavcodec/jpeg2000dsp.c
	libavcodec/jpeg2000dsp.h

See: c9f2ec8aMerged-by: NMichael Niedermayer <michaelni@gmx.at>