1185. [bug] libbind: don't assume statp->_u._ext.ext is valid
unless RES_INIT is set when calling res_*init().
1184. [bug] libbind: call res_ndestroy() if RES_INIT is set
when res_*init() is called.
--with-irs-gr=yes #define WANT_IRS_GR --with-irs-nis=yes #define WANT_IRS_NIS --with-irs-pw=yes #define WANT_IRS_PW