[PATCH] Document Dual ABI for std::ios_base::failure

[Jonathan Wakely]

On 10/05/18 12:17 +0100, Jonathan Wakely wrote:
>And a couple of other doc improvements, and regenerated the HTML
>pages.
>
>Please read the proposed change to using.xml and let me know if it's
>clear.
>
>	* doc/xml/faq.xml: Link to C++17 status. Add note to outdated answer.
>	* doc/xml/manual/debug_mode.xml: Add array and forward_list to list
>	of C++11 containers with Debug Mode support.
>	* doc/xml/manual/using.xml: Document Dual ABI for ios_base::failure.
>	* doc/html/*: Regenerate.

Committed to trunk.