Object efuns

The efuns are for moving and managing objects:

environment related efuns: (Not available with NO_ENVIRONMENT)
* all_inventory * deep_inventory * environment * first_inventory * move_object * next_inventory * present
loading and managing objects:
* children * clone_object * clonep * destruct * file_name * find_object * load_object * master * new * objectp * objects * reload_object * restore_object * save_object * set_hide * virtualp
heart_beat related efuns:
* query_heart_beat * set_heart_beat * heart_beat_info * heart_beats
message sending efuns:
* tell_object * tell_room
Tim Hollebeek Beek@ZorkMUD, Lima Bean, IdeaExchange, and elsewhere