[RFA 2/6] Handle alignof and _Alignof

[Eli Zaretskii]

> From: Tom Tromey <tom@tromey.com>
> Cc: Tom Tromey <tom@tromey.com>
> Date: Tue, 24 Apr 2018 09:22:18 -0600
> 
> diff --git a/gdb/NEWS b/gdb/NEWS
> index 63fe30d175..6631b53475 100644
> --- a/gdb/NEWS
> +++ b/gdb/NEWS
> @@ -9,6 +9,9 @@
>  * 'info proc' now works on running processes on FreeBSD systems and core
>    files created on FreeBSD systems.
>  
> +* C expressions can now use _Alignof, and C++ expressions can now use
> +  alignof.
> +
>  * New commands

OK for this part.

Thanks.