1st of a few sequencing changes

rename display_gamewindows() to init_sound_and_display_gamewindows()
(I know that's getting pretty long-named).

move activate_chosen_soundlib() into init_sound_and_display_gamewindows()
from moveloop_preamble().

Also included was a missing break in a switch related to sounds.

outdated/sys/be/bemain.c

@@ -64,7 +64,7 @@ MAIN(int argc, char **argv)
      */
     vision_init();
 
-    display_gamewindows();
+    init_sound_and_display_gamewindows();
 
     /*
      * First, try to find and restore a save file for specified character.