[tz] [PROPOSED] Port alignof to Oracle Developer Studio

[Guy Harris]

On Dec 1, 2022, at 1:01 PM, Paul Eggert via tz <tz at iana.org> wrote:

> /* The minimum alignment of a type, for pre-C23 platforms.  */
> -#if __STDC_VERSION__ < 201112
> +#if __STDC_VERSION__ < 201112 || defined __SUNPRO_C

Should this note why you're checking for __SUNPRO_C, so you don't have to "git bisect" or whatever to find the commit in which that was added, and then look t its commit log?