Added <initializer_list> to stdc++.h

[Paolo Carlini]

Benjamin Kosnik wrote:
> It went to the usual web form, and I approved on overseers. Here's the
> form:
> http://sourceware.org/cgi-bin/pdw/queue.cgi
>   
Thanks for the link I didn't have it handy.
> I believe Ed is interested in starting a tr2 branch. Sounds like a good
> idea to me!
>   
Definitely. In fact he already did! Well, in fact I would also suggest
sorting out one way or the other libstdc++/34419 ;) Or I can do it...

In general, the entire business with the above web form was not clear to
me and still isn't, to be honest, can you possibly remind it to me,
privately, in case? Thanks in advance.

Paolo.