[Cin] libvpx via ffmpeg on high-cpu machines

[Andrea paz]

> Interesting to have the "impossible".  I got one of these when I was using Valgrind:
> vex: the `impossible' happened:
>    VEX temporary storage exhausted.

It is my bad italian translation. The real sentence should be "no such
file or directory".
Instead of "git am ..." I also tried "patch -p(n) < ..." with
n=0,1,2,3 and 4 but I still have errors.

PS: Can you remove the word "table:" from the table caption in
advanced.tex --> proxy?