[wwwdocs] Update C++ conformance status

[Jonathan Wakely]

On 21/11/15 16:54 +0100, Gerald Pfeifer wrote:
>On Sat, 21 Nov 2015, Jonathan Wakely wrote:
>> I forgot to respond to this, and never committed the patch, sorry.
>>
>> I've committed the changes to htdocs/projects/cxx0x.html now, but
>> not the htdocs/bugs/index.html change.
>
>I wasn't opposed to the bugs/index.html change, mind.  Only
>wondering about the 3.x info.
>
>> I agree that the 3.x info is not useful on that page. Maybe we should
>> just drop the whole "Common problems when upgrading the compiler"
>> section, because info on 3.x is outdated, nearly everybody understands
>> that C++ compilers conform to the standard these days (even MS got in
>> on that act eventually ;-) and the info about breaking the C++ ABI with
>> every major release is just wrong!
>
>Version-specific changes like the ones described here, and how to
>cope with them, are usually covered in gcc-*/porting_to.html these
>days, perhaps we should add pointers from bugs.html?
>
>I agree with your thoughts and went ahead and made a first set of
>changes along these lines (patch below).

LGTM.

>Absolutely go ahead and trim (or remove) this further.
>
>There is also a section about "C++ non-bugs" where I am not sure
>the current contents still makes a lot of sense?

Agreed, most of it isn't useful now (although some is).

I'll make another pass at it next week, thanks.