Update Kokkos library to v2.03.13

lib/kokkos/core/perf_test/PerfTestMain.cpp

@@ -1,13 +1,13 @@
 /*
 //@HEADER
 // ************************************************************************
-// 
+//
 //                        Kokkos v. 2.0
 //              Copyright (2014) Sandia Corporation
-// 
+//
 // Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
 // the U.S. Government retains certain rights in this software.
-// 
+//
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
@@ -36,12 +36,14 @@
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 //
 // Questions? Contact  H. Carter Edwards (hcedwar@sandia.gov)
-// 
+//
 // ************************************************************************
 //@HEADER
 */
 
 #include <gtest/gtest.h>
+#include <cstdlib>
+
 #include <Kokkos_Core.hpp>
 
 namespace Test {