cycle all configured communities on addhost, remove dead code, minor optimisation on isdomainresolves

git-svn-id: http://www.observium.org/svn/observer/trunk@1933 61d68cd4-352d-0410-923a-c4978735b2b8

includes/functions.php

@@ -528,7 +528,7 @@ function createHost($host, $community, $snmpver, $port = 161, $transport = 'udp'
 
 function isDomainResolves($domain)
 {
-  return (gethostbyname($domain) != $domain | count(dns_get_record($domain)) != 0);
+  return (gethostbyname($domain) != $domain || count(dns_get_record($domain)) != 0);
 }
 
 function hoststatus($id)

includes/unix-graphing.php

@@ -1,7 +1,6 @@
 <?php 
 
 ## FIXME not used, do we still need this?
-## included from includes/unix.php, which is also unused
 
 function mailerrorgraphUnix ($rrd, $graph, $from, $to, $width, $height, $title, $vertical) {
   global $config, $installdir;

includes/unix.php

@@ -1,3 +0,0 @@
-<?php
-  include("unix-graphing.php");
-?>