member functions:
virtual
~CErrorHandler(): Empty. Just there because without it the Watcom
compiler issues a warning that the class has a non-virtual destructor.
virtual
void NoteError (char *message): Just calls ProcessMessage()
with the message. Derived classes may do some intermediate steps in this
function.
virtual
void ProcessMessage (char *string): Prints the string, followed by
a newline, to cerr.