RFA: Improvements to libiberty v3 demangler

[Ian Lance Taylor]

DJ Delorie <dj@redhat.com> writes:

> > After getting this far, I've realized that the whole approach used
> > by this code is fundamentally broken.
> 
> Er, that's why I'm writing a new one.  I've mentioned this before.

Yeah, I know, but, well, it's been months, and I got tired of waiting.
In the last note I saw, back in July, you mentioned a problem with
qualifiers on class method pointers, and I saw how to fix that, or at
least what I thought you were referring to.  Digging into it farther,
I saw the real deficiency.

Ian