linuxthreads: Fix compilation breakage
linuxthreads: Fix compilation breakage

With commit "resolv.c: add support for per thread res_state"
(aab4df0fb51660300559f5f29290709db2f7bfee) _res symbol is now marked
as hidden in an attempt to make the resolver per-thread.

Signed-off-by: Matt Fleming <144cc4c33a91c3f236fb3354d519b92f95d0c3ce@imgtec.com>
Signed-off-by: Bernhard Reutner-Fischer <ce1ac9e9ad16abccd7821f371ad381197b4768ac@gmail.com>

joel-porquet/tsar-uclibc,joel-porquet/tsar-uclibc,joel-porquet/tsar-uclibc,joel-porquet/tsar-uclibc