MG J0414+0534 MG J0414+0534 CASTLES A third H I 21-cm absorption system in the sight-line of MG J0414+0534: A redshift for Object X? A FOURTH H i 21-CM ABSORPTION SYSTEM IN THE SIGHT-LINE OF MG J0414+0534: A RECORD FOR INTERVENING ABSORBERS H I and OH absorption in the lensing galaxy of MG J0414+0534 PKS 1830–211