Merge remote-tracking branch 'qatar/master'

* qatar/master:
  vf_yadif: Relicense from GPL to LGPL

Conflicts:
	LICENSE
	configure
	libavfilter/vf_yadif.c
	libavfilter/x86/vf_yadif.asm
	libavfilter/x86/vf_yadif_init.c
	libavfilter/yadif.h

See: 194ef56bMerged-by: Michael Niedermayer <michaelni@gmx.at>