Consistently use "localhost" when binding to 0.0.0.0

Author: thekid

src/main/php/xp/web/srv/Standalone.class.php

@@ -50,7 +50,7 @@ public function serve($source, $profile, $webroot, $docroot, $config, $args, $lo
     Console::writeLinef(
       "\e[33;1m>\e[0m Server started: \e[35;4mhttp://%s:%d\e[0m in %.3f seconds\n".
       "  %s - PID %d; press Ctrl+C to exit\n",
-      '0.0.0.0' === $this->host ? '127.0.0.1' : $this->host,
+      '0.0.0.0' === $this->host ? 'localhost' : $this->host,
       $this->port,
       microtime(true) - $_SERVER['REQUEST_TIME_FLOAT'],
       date('r'),