Synopsys   : FILTER_LIVE(x)

Defined in : /sys/filter_funs.h

Description: This filter returns all elements of an array that are living
             objects. An object is living when it has been made living
             with the efun enable_commands. Usually these include all
             players and NPC's.
Arguments  : object *x - the array with objects to filter.
Returns    : object *  - an array with only living objects in it.
