% TTTRYPOST   Post a message to a mailbox.%%  Usage: ok = ttTryPost(mailboxname, msg)%%  Inputs:%    mailboxname  Name of a mailbox.%    msg          The contents of the message to be posted.%       % See also TTCREATEMAILBOX, TTTRYFETCH%%       TrueTime, Version 1.4%       Copyright (c) 2006%       Martin Ohlin, Dan Henriksson and Anton Cervin%       Department of Automatic Control, LTH%       Lund University, Sweden