Re: doas: add optional timeout to persist directive

+                       yylval.timeout = (int)timeout;

On a 64-bit architecture what happens if someone passes 
a 2147483680


I don't like what you are doing here.  I honestly don't see a reason to
allow configurable amount of time here.  The original discussion for
5 minutes was "approximately how long before someone forgets about this
persistance which could hurt them".