Take the site address from SITE_URL.

The feed links, the notification email, the webmaster address and the cookie domain now use it.

html.lib.php

@@ -8,4 +8,9 @@ function h($string) {
 function form_value($string) {
   return htmlspecialchars((string)$string, ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8');
 }
+
+// Text as numeric character references, which hides an email address from simple harvesters
+function hidden_email($address) {
+  return preg_replace_callback('/./s', function ($char) { return '&#' . ord($char[0]) . ';'; }, (string)$address);
+}
 ?>