Fix FTBFS on freebsd

This resolves Bug 2428

Signed-off-by: Nikolaus Klepp <office@klepp.biz>
(cherry picked from commit 31a6127eec)

mcop/tcpconnection.cc

@@ -35,6 +35,7 @@
 #include <errno.h>
 #include "debug.h"
 #include <stdlib.h>
+#include <string.h>
 
 using namespace std;
 using namespace Arts;

mcop/unixconnection.cc

@@ -29,6 +29,7 @@
 #include <sys/un.h>
 #include <errno.h>
 #include <stdlib.h>
+#include <string.h>
 
 using namespace std;
 using namespace Arts;

mcop/unixserver.cc

@@ -40,6 +40,7 @@
 #include <unistd.h>                                                      
 #include <stdio.h>
 #include <errno.h>
+#include <string.h>
 
 using namespace std;
 using namespace Arts;

mcop_mt/threads_posix.cc

@@ -358,7 +358,7 @@ static void pth_rec_cond_init (GslCond *cond)
 static void pth_rec_cond_wait_timed (GslCond *cond, GslMutex *mutex,
 									 gulong abs_secs, gulong abs_usecs)
 {
-	struct timespec abstime;
+	struct ::timespec abstime;
 
 	abstime.tv_sec = abs_secs;
 	abstime.tv_nsec = abs_usecs * 1000;