[Cin] CinGG and ffmpeg 4.4

[Phyllis Smith]

Andrea, I think I have caught up with you now.  So far have done the same
as recommended by Andrew):

1) move patch2 (for now)
2) delete patch4 (not needed anymore)
3) added ONLY the patch from Andrew as listed below (if you have trouble
with this, I can send the 2 whole files instead).

https://git.ffmpeg.org/gitweb/ffmpeg.git/blob_plain/HEAD:/libavfilter/af_aformat.c
>

4) am now at the bdwrite and lv2ui errors like you; will work on these
tomorrow
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