Recognize j2k as file suffix for the image2 muxer.
fate: move more tests from lavfi-regression.sh to filter-video.mak.
fate: restore our settings for drawtext/fade/unsharp.
fate: move colormatrix tests to the new system.
Merge remote-tracking branch 'cehoyos/master'

* cehoyos/master:
  Recognize j2k as file suffix for the image2 muxer.

Merged-by: Michael Niedermayer <michaelni@gmx.at>