add_subtree
extern void add_subtree(Name target, int recursion_level,
(void) add_subtree(parh, sgfruhdl);
(void) add_subtree(parh, sgfruchassisp->handle);
(void) add_subtree(locnodeh, sgfruhdl);
static int add_subtree(picl_nodehdl_t parh, fru_hdl_t fruparent);
return (add_subtree(frutreeh, ROOTPARENT));
err = add_subtree(childh, cp->handle);