fix several include errors with ports-gcc
Index: UtlTrace.cpp
--- UtlTrace.cpp.orig
+++ UtlTrace.cpp
@@ -24,6 +24,7 @@ To contact the author: codeworker@free.fr
 #endif
 
 #include <stdarg.h>
+#include <string.h>
 #include "ScpStream.h"
 #include "UtlTrace.h"