GCC wwwdocs move to git done

[Frank Ch. Eigler]

Hi -

Thanks - good job with moving this to git!

> Note 1: someone with the right access needs to create the symlink 
> /sourceware/git/gcc-wwwdocs.git -> 
> /sourceware/projects/gcc-home/wwwdocs.git (and anything else needed for 
> anonymous git access to that repository).

Done.

- FChE