[master] Fix for Sunstudio

Include config.h in several .cc files to trigger the workaround in nsas for the boost/thread.hpp compilation issue

src/lib/cache/message_cache.cc

@@ -14,6 +14,8 @@
 
 // $Id$
 
+#include <config.h>
+
 #include <nsas/nsas_entry_compare.h>
 #include <nsas/hash_table.h>
 #include <nsas/hash_deleter.h>

src/lib/cache/message_entry.cc

@@ -14,6 +14,8 @@
 
 // $Id$
 
+#include <config.h>
+
 #include <limits>
 #include <dns/message.h>
 #include <nsas/nsas_entry.h>

src/lib/cache/resolver_cache.cc

@@ -14,6 +14,8 @@
 
 // $Id$
 
+#include <config.h>
+
 #include "resolver_cache.h"
 #include "dns/message.h"
 #include "rrset_cache.h"

src/lib/cache/rrset_cache.cc

@@ -14,6 +14,8 @@
 
 // $Id$
 
+#include <config.h>
+
 #include <string>
 #include "rrset_cache.h"
 #include <nsas/nsas_entry_compare.h>

src/lib/cache/rrset_entry.cc

@@ -14,6 +14,8 @@
 
 // $Id$
 
+#include <config.h>
+
 #include <dns/message.h>
 #include <nsas/nsas_entry.h>
 #include <nsas/fetchable.h>