- use the standard option parsing routines;

- document existing but undocumented parameters to send a message
  (untested but unchanged;

- ad a new option p(N) to set the initial message delay to N ms
  so this can be adapted from the dialplan to various countries;
 



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@48825 65c4cc65-6c06-0410-ace0-fbb531ad65f3