New demangler in C++

[Mark Mitchell]

> Instead, a new implementation was donated to the FSF that is
> substantially better that what was used previously. It offers several
> advantages, which I have already pointed out. I think it would be
> foolish to ignore a gift and not use the new implementation for
> __cxa_demangle.

If the new version is better we should use it -- but better should
include the fact that it can truly replace the old version.  
 
> This is now in.

Is it just in V3 or in libiberty as well?

-- 
Mark Mitchell
CodeSourcery, LLC
mark@codesourcery.com