[PATCH] resolv: Forward legacy name resolution function calls to NSS

[Florian Weimer]

The attached patch replaces the compat name lookup functions with calls
to the matching NSS functions.  I think this is the right thing to do
for now.  If this turns out to break NSS modules which assume that
calling res_gethostbyname does not call into NSS in turn, we could
probably add a more elaborate compat implementation based on nss_dns and
nss_files, without actually duplicating their code.

Comments?

Thanks,
Florian
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