Always call endservent_r() after getservbyport_r().
Fix a memory leak when no entry is matched.

ok florian

snprintf/vsnprintf return < 0 on error, rather than -1.

Put a common subq pointer in the query struct, rather than one in each
element of the union.

ok gilles@ millert@ krw@

remove bogus includes of err.h

Wrap <asr.h> so internal calls go direct and all the symbols are weak

Hide all unnecessary asr / resolver related API with _ prefixes.
direction & ok guenther

Make the asr API public. Install asr.h to /usr/include.h and manpages.
Include tweaks suggested by mpi@

ok deraadt@

Cleanup and simplify the API to be exposed. Use better names for
structures, functions and defines.

discussed with and ok deraadt@ guenther@

Make some symbols static and prefix all visible symbols with asr_
to prevent collisions with third-party programs.

suggested by sthen@, ok theo@

correctly show the scope for IPv6 addresses in getnameinfo()

knf

When building dynamic hostent and netent, allocate a single linear buffer to
hold both the structure and the data. The freehostent() and freenetent() API
functions are not needed anymore. While ther

When building dynamic hostent and netent, allocate a single linear buffer to
hold both the structure and the data. The freehostent() and freenetent() API
functions are not needed anymore. While there, ensure that the constructed
addr and alias lists are really NULL terminated.

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Improve error reporting in getnameinfo_async() and getaddrinfo_async().
They do not have to deal with h_errno at all. Also, errno is only kept
for EAI_SYSTEM. Small code cleanup while there.

Adapt

Improve error reporting in getnameinfo_async() and getaddrinfo_async().
They do not have to deal with h_errno at all. Also, errno is only kept
for EAI_SYSTEM. Small code cleanup while there.

Adapt getnameinfo() and getaddrinfo() wrappers to correctly save errno
and overwrite it in the EAI_SYSTEM case.

General errno handling issue reported by mikeb@.

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fix a few warnings

Import asr, an experimental async resolver implementation.
The idea is to eventually replace the existing resolver with
something better. Time to start working on it in tree.

ok deraadt@