MASTER SHARE PURCHASE AGREEMENT RELATING TO THE DISSOLUTION OF THE SPICER JOINT VENTURE by and among DESC AUTOMOTRIZ, S.A. DE C.V., INMOBILIARIA UNIK, S.A. DE C.V., SPICER, S.A. DE C.V., DANA CORPORATION, and DANA HOLDINGS MEXICO, S. DE R.L. DE C.V....