clone_group
share->group = clone_group(group, "parse_statement:subnet");
host->group = clone_group(group, "parse_host_declaration");
class->group = clone_group(group, "parse_class_declaration");
share->group = clone_group(group, "parse_shared_net_declaration");
subnet->group = clone_group(share->group, "parse_subnet_declaration");
g = clone_group(group, "parse_group_declaration");
struct group *clone_group(struct group *, char *);