Stale C++ ABI link

[Joe Buck]

Richard Henderson writes:
> On
>  http://gcc.gnu.org/onlinedocs/libstdc++/manual/abi.html
> we have a stale link to
>  http://www.codesourcery.com/public/cxx-abi/abi.html

>What's the new canonical location for this document?

Looks like CodeSourcery is being assimilated into Mentor.  The parent directory points to

http://mentorembedded.github.com/cxx-abi/abi.html

as the new location.