Added a feature which allows suppression of certain log messages. For example TRANSACT messages

logv2.h

@@ -110,7 +110,7 @@ void RemoveLogCallback(LogCallback func);
  * \param subsystem the subsystem of the message
  * \return 1 when filtered, 0 else
  */
-unsigned int logFilter(unsigned int severity, const char *subsystem);
+unsigned int logFilter(unsigned int severity, const char *subsystem, const char *logMessage);
 /*
  *Disable logging in support of the nolog option in SICSmain.c
  */