silence warning on solaris 10

on solaris 10, bzero is declared in strings.h and not in string.h

cmr=v1.8.2:reviewer=rhc

This commit was SVN r32502.

opal/class/opal_value_array.h

@@ -22,6 +22,7 @@
 #include "opal_config.h"
 
 #include <string.h>
+#include <strings.h>
 
 #include "opal/class/opal_object.h"
 #if OPAL_ENABLE_DEBUG