af_compand: add a dependency on strtok_r
Merge remote-tracking branch 'qatar/master'

* qatar/master:
  af_compand: add a dependency on strtok_r

Conflicts:
	configure

Not merged as FFmpegs compand filter does not depend on strtok_r
Merged-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/h264_refs: remove lost frames instead of disfavoring them

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