NEW SUNWARD HOLDING FINANCIAL VENTURES B.V., as Issuer, and CEMEX, S.A.B. de C.V., CEMEX MEXICO, S.A. de C.V., and NEW SUNWARD HOLDING B.V. as Guarantors, TO THE BANK OF NEW YORK MELLON, as Trustee FIRST SUPPLEMENTAL INDENTURE Dated as of August 10,...