Index: branches/RC/core/kernel/globals.php
===================================================================
diff -u -r10098 -r10304
--- branches/RC/core/kernel/globals.php	(.../globals.php)	(revision 10098)
+++ branches/RC/core/kernel/globals.php	(.../globals.php)	(revision 10304)
@@ -601,6 +601,18 @@
 		return $headers;
 	}
 
+	/**
+	 * Checks that file is writable by group or others
+	 *
+	 * @param string $file
+	 * @return boolean
+	 */
+	function check_write_permissions($file)
+	{
+		$permissions = fileperms($file);
+		return $permissions & 0x0010 || $permissions & 0x0002;
+	}
+
 	if (!function_exists('easter_date')) {
 		// calculates easter date, when calendar extension not installed in php
 		// see also: http://php.prod.intechnic.lv/manual/en/function.easter-date.php