[cups.general] Allow syntax in cupsd.conf

[Rick Cochran]

Michael R Sweet wrote:
> Like Apache, the "from" is optional, so from a completely minimalist
> point of view you probably want to use the "Allow address" form.  That
> said, there is no preference from a CUPS standpoint and both forms
> will continue to be accepted, just like Apache.

My experience is that unlike Apache, CUPS can handle only one IP/DNSname in an 
"Allow" directive.

-Rick