NAME
	children - return array of objects sharing same source filename

SYNOPSIS
	object *children(string file)


DESCRIPTION
	Returns an array of objects cloned by a master program, or being
	the master program itself.

	Config.h must define MUDOS_CHILDREN for this function to exist.

NOTE
	This function not efficient as it spans through objects() to
	obtain its goal.

SEE ALSO
	efun/source_file_name, efun/file_name