[v3] move more num_put speedups to 3.3

[Benjamin Kosnik]

This other stuff in too, thanks.

>Once this is in, I'll see if I can make the locale
>cache stuff work without breaking the ABI.

Great news. I'm testing this now.

>BTW, could you look at this patch?
>http://gcc.gnu.org/ml/libstdc++/2003-02/msg00344.html

Just a minute...

>What do I have to do to get write access?

Ask overseers, and tell them you want write after approval for libstdc++-v3.

-benjamin