* commit 'd371c3c2':
  vf_frei0r: make config_props work properly when called multiple times.
  vf_gradfun: make config_props work properly when called multiple times.
  vf_lut: make config_props work properly when called multiple times.

Conflicts:
	libavfilter/vf_lut.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>