gcc 4.4 changes

opttst.cc

@@ -84,7 +84,7 @@ string examples =
 opttst -d <number> -m <filename> -r <filename>\n\
 opttst --verbose\n";
 
-int main(unsigned int argc, char **argv) {
+int main(int argc, char **argv) {
 
   OptionParser options(title, examples);
 

time_tracer.h

 /*  Time_Tracer.h
 
-    Mark Woolrich, FMRIB Image Analysis Group
+    Mark Woolrich and Matthew Webster, FMRIB Image Analysis Group
 
-    Copyright (C) 1999-2000 University of Oxford  */
+    Copyright (C) 1999-2010 University of Oxford  */
 
 /*  CCOPYRIGHT  */
 
@@ -12,6 +12,7 @@
 #include <iostream>
 #include <fstream>
 #include <string>
+#include <cstring>
 #include <time.h>
 #include <set>
 #include <stack>