Add -lresolv to the Solaris ex_libs

The reason is that we use hstrerror() and other resolver functions.

Reporter: Erik Forsberg <erik@efca.com>
Reviewed-by: NRich Salz <rsalz@openssl.org>

Configurations/10-main.conf

@@ -39,7 +39,7 @@
     "solaris-common" => {
         template         => 1,
         cflags           => "-DFILIO_H",
-        ex_libs          => "-lsocket -lnsl -ldl",
+        ex_libs          => "-lresolv -lsocket -lnsl -ldl",
         dso_scheme       => "dlfcn",
         shared_target    => "solaris-shared",
         shared_extension => ".so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",