[v3] 4.4/4.5 evolution doc updates

[Jonathan Wakely]

2010/1/5 Benjamin Kosnik:
>
> Updates for API docs for the last two releases. Had tried to get to
> this before the end of the year but didn't quite make it.
>
> Please people, review this as I'm writing up the 4.5/changes.html bits
> for runtime, and basing it off this.

+Audit of internal mutex usage, conversion to funtions returning static

typo of "functions"

Talking of functions, there's now a separate implementation for the
C++0x parts of <functional>, instead of using the same code as
<tr1/functional>, which adds rvalue reference support to
std::function. I hope to finish similar changes for std::bind in the
next day or two.