revert <cstdint> back to <stdint.h> as the former seems to require C++-11

src/USER-INTEL/intel_intrinsics_airebo.h

@@ -744,7 +744,7 @@ struct intr_types<float,double> {
 
 #include <cassert>
 #include <immintrin.h>
-#include <cstdint>
+#include <stdint.h> // <cstdint> requires C++-11
 
 #define VEC_INLINE __attribute__((always_inline))
 

src/USER-INTEL/pair_airebo_intel.cpp

@@ -23,7 +23,7 @@
 #include <cstring>
 #include <cmath>
 #include <cstdio>
-#include <cstdint>
+#include <stdint.h> // <cstdint> requires C++-11
 #include <cassert>
 #include <cstddef>
 #include "lmptype.h"

src/USER-OMP/pair_agni_omp.cpp

@@ -14,7 +14,7 @@
 
 #include <cmath>
 #include <cstring>
-#include <cstdint>
+#include <stdint.h> // <cstdint> requires C++-11
 #include "pair_agni_omp.h"
 #include "atom.h"
 #include "comm.h"

src/info.cpp

@@ -51,7 +51,7 @@
 #ifdef _WIN32
 #define PSAPI_VERSION 1
 #include <windows.h>
-#include <cstdint>
+#include <stdint.h> // <cstdint> requires C++-11
 #include <psapi.h>
 #else
 #include <sys/time.h>

src/lmptype.h

@@ -37,7 +37,7 @@
 #endif
 
 #include <climits>
-#include <cstdint>
+#include <stdint.h> // <cstdint> requires C++-11
 #include <cinttypes>
 
 // grrr - IBM Power6 does not provide this def in their system header files

src/math_special.cpp

@@ -1,5 +1,5 @@
 #include <cmath>
-#include <cstdint>
+#include <stdint.h> // <cstdint> requires C++-11
 #include "math_special.h"
 
 using namespace LAMMPS_NS;

src/timer.cpp

@@ -22,7 +22,7 @@
 
 #ifdef _WIN32
 #include <windows.h>
-#include <cstdint>
+#include <stdint.h> // <cstdint> requires C++-11
 #else
 #include <sys/time.h>
 #include <sys/resource.h>