NAME
Logfile_stampMessage
SYNOPSIS
Logfile_stampMessage(character(len=*)(in) :: string,
logical(in),optional :: force)
DESCRIPTION
ARGUMENTS
string : message to stamp to the logfile
force : if force=true, the Logfile is stamped no matter what myPE calls
Otherwise, only the MASTER_PE can stamp the logfile
NOTES
In general, only Driver_abortFlash should set force=true.
Otherwise, extremely slow behaviour or fatal errors may occur in multi-
processor runs