Revision 1389

* the following LSCP commands now also support escape sequences for at
  least one of their text-based arguments (i.e. name, description):
  "ADD MIDI_INSTRUMENT_MAP", "SET MIDI_INSTRUMENT_MAP NAME",
  "SET FX_SEND NAME", "CREATE FX_SEND"
* the LSCP spec doc now lists all LSCP commands which support escape
  sequences as one of their arguments