import changes from gcc-in-cxx branch

[Dave Korn]

Brad Hards wrote:
> On Saturday 16 May 2009 08:37:58 pm Dave Korn wrote:
>>   Out of curiosity, does the 'd' in '_d' stand for anything?
> Not to me - I didn't write it.
> 
> I do know "d-pointer" as an alternative name for the pimpl idiom in C++, but 
> that might not be the same usage here.
> 
> Possibly for "different"? "declaration"? "delta"?

 ... "_don't_warn"?  Anyway, no big deal, I just wondered.  Maybe we should
adopt a convention for tags <-> typedefs.  Maybe it's not important enough to
bother with and ad-hoc choices will be fine.  Thanks for commenting.

    cheers,
      DaveK