gst-libav 1.8.3 build regression?

[Gustavo Zacarias]

Hi.
Before sending a patch that might not be welcome, i've got a build 
regression when upgrading from gst-libav 1.8.2 to 1.8.3.
In 70c281b5 a check was added to ignore more quasi-codecs, however the 
AV_CODEC_ID_WRAPPED_AVFRAME define is a ffmpeg3-ism.
Previously i could build gst-libav against system ffmpeg 2.8.7 and with 
gst-libav 1.8.3 i can't.
Is this intentional or not? (I.E. bumping the minimum required system 
ffmpeg to v3).
Thanks.
Regards.