Feature: Line buffering of cluster synchronisation log file

Added code to set automatic buffer flush for the ClusterSync log file when it is initially opened and cycled after receipt of the {\tt HUP} signal. This allows those who monitor the log file with, for example, {\tt tail~-f} to see the complete log item for a transaction without waiting for the buffer to be flushed.

Modified the cluster synchronisation log file generation to skip the ``Results:'' line if the command produced no output.