Include <sys/time.h> to get struct timeval definition

[dim]

Summary

While building the test suite on FreeBSD, I encountered an error due to
struct timeval being unknown in CLAMR's partition.cpp. Add an include
of <sys/time.h> to fix it.

[krytarowski]

Looks good.

[hfinkel]

In D43169#1004577, @krytarowski wrote:

Looks good.

LGTM too.

test-suite/trunk/MultiSource/Benchmarks/DOE-ProxyApps-C++/CLAMR/partition.cpp

  *           David Nicholaeff        [e-mail], [e-mail]
  *           Dennis Trujillo         [e-mail], [e-mail]
  * 
  */
 #ifdef HAVE_MPI
 #include "mpi.h"
 #endif
 
+#include <sys/time.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <math.h>
 #include <list>
 #include <algorithm>
 #include "partition.h"
 #include "KDTree.h"
 #include "mesh.h"