[v3] Update C++11 status table.

[Benjamin Kosnik]

>         * doc/xml/manual/documentation_hacking.xml: Fix invalid
> attribute.
> 
> Also committed to trunk. Tested with 'make doc-xml-validate-docbook
> doc-html'

Doh!

Thanks for cleaning up after my late-night hacking..... If you can, I'd
appreciate you trying to generate the PDF doxygen manual with the
memory-increasing change to TeX. I understand the doc toolchain for
doing this is non-trivial.

 I really want the hyperlinks.... without it this huge reference doc is
 largely useless.

-benjamin