New C++ ABI: patches.

[Alexandre Petit-Bianco]

[I had a bogus CC: field in the previous post. Sorry about that.]

Mark Mitchell writes:

> I'm ecstatic if y'all get so that using the old ABI is *hard* for
> you;

It will. There are absolutely no provisions in the front-end to use
the old and the new mangling scheme; that would simply be too ugly
(and writing the new mangling code gave me a chance to clean this part
of the compiler a bit.)

./A