[Cin] AOM 3.8, again

[Andrea paz]

> sorry to point out, but you missed " --extra-cflags=-I/usr/include/svt-av1" substring for FFMPEG_EXTRA_CFG variable.

My apologize.
Same crash with "include". Same row in the log:

Unknown option "--enable-lSvtAv1Enc".

I append the cin5_include.loglevel

> Well ....  even slower than original (internal/3.4)? Or just among other results with updated libaom ?

A little more slow with internal 3.4, but very variable results.