[-] Installer : changed syntax from $class:func to call_user_func because it seems to be more compliant with old PHP versions

install-dev/models/database.php

@@ -96,7 +96,7 @@ class InstallModelDatabase extends InstallAbstractModel
 	public function createDatabase($server, $database, $login, $password, $dropit = false)
 	{
 		$class = Db::getClass();
-		return $class::createDatabase($server, $login, $password, $database, $dropit);
+		return call_user_func(array($class, 'createDatabase'), $server, $login, $password, $database, $dropit);
 	}
 	
 	public function getBestEngine($server, $database, $login, $password)