glib2: insecure permissions for files and directories

The keyfile settings backend in GNOME GLib aka glib2.0 before 2.60.0 creates directories using gfilemakedirectorywithparents kfsb-dir, NULL, NULL and files using gfilereplacecontents kfsb-file, contents, length, NULL, FALSE, GFILECREATEREPLACEDESTINATION, NULL, NULL, NULL. Consequently, it does n...