fix github issue 361 to make user_sounds useful even if MSGTYPE is hidden

fixes #361

Also, experminental introduction of vt_sounddata to enable tty to pass
a sound file index to the terminal side of things where perhaps someone
can add code to something like hterm to take the information relayed by
NetHack to trigger user_sounds locally even if playing on a server.

Compile time option TTY_SOUND_ESCCODES required to build that support in.

It should be independent of TTY_TILE_ESCCODES.

win/Qt/qt_msg.cpp

@@ -103,10 +103,6 @@ const char * NetHackQtMessageWindow::GetStr(bool init)
 
 void NetHackQtMessageWindow::PutStr(int attr, const QString& text)
 {
-#ifdef USER_SOUNDS
-    play_sound_for_message(text.toLatin1().constData());
-#endif
-
     changed=true;
 
     // If the line is output from the "/" command, map the first character