[PATCHSET] Add support for fall through attribute

[Andrew Bartlett]

On Thu, 2017-12-07 at 11:00 +0100, Andreas Schneider via samba-
technical wrote:
> Hello,
> 
> at least GCC offers a new warning: -Wimplicit-fallthrough
> 
> It also has an attribute to mark a case in a switch statement as fall through 
> to disable the warning!
> 
> 
> Please review and push if OK.

This looks great.  I'll look over it more carefully tomorrow, but a big
thanks for investigating ways to make our C a little more safe!

Andrew Bartlett
-- 
Andrew Bartlett                       http://samba.org/~abartlet/
Authentication Developer, Samba Team  http://samba.org
Samba Developer, Catalyst IT          http://catalyst.net.nz/services/samba