g_OID_copy
g_OID_copy(&ncred->mechs_array[i], &cred->mechs_array[i]);
g_OID_copy(&union_cred->mechs_array[union_cred->count], selected_mech);
g_OID_copy(&new_mechs_array[union_cred->count], selected_mech);
g_OID_copy(&new_mechs_array[union_cred->count], selected_mech);
g_OID_copy(curItem, mList->mech_type);