[FFmpeg-cvslog] doc: Point to the new location of the c99-to-c89 tool

[compn]

On Fri,  2 Nov 2012 15:12:06 +0100 (CET), Martin Storsjö wrote:
>- at item @uref{https://github.com/rbultje/c99-to-c89/, C99-to-C89 Converter & Wrapper}
>+ at item @uref{https://github.com/libav/c99-to-c89/, C99-to-C89 Converter & Wrapper}

is this useful tool mirrored on ffmpeg/libav in case github has problem?
dont like relying on 3rd party hosts.

-compn