[wwwdocs, coding conventions] Mention OVERRIDE/FINAL

[Pedro Alves]

On 10/14/2016 10:28 PM, David Malcolm wrote:

> I propose that we update our coding conventions to mention the OVERRIDE
> and FINAL macros in the paragraph that discusses virtual funcs.
> 
> The attached patch (to the website) does so.
> 

Good idea, I like it.

GDB is following GCC's C++ coding conventions, BTW:

  https://sourceware.org/gdb/wiki/Internals%20GDB-C-Coding-Standards#C.2B-.2B--specific_coding_conventions

At least for starters.  :-)  Let's see how that goes.

Thanks,
Pedro Alves