spelling fixes; from paul tagliamonte
any changes not taken noted on tech, but chiefly here i did not take the
cancelation - cancellation changes;

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.

make a && && & block more readable. no binary change.
discussed with otto

Finish wrapping <netdb.h> so that calls go direct and the symbols are all weak

getnameinfo(3) doesn't need to initialize the resolver when it's only used
for address/port formatting (e.g. NI_NUMERICHOST).

ok deraadt@ jca@

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@

Add minimal support for _res setup and update.

Change res_init() to initialize the _res structure on first call, and
udpate the global async context if changes were made by the user. All
resolver fu

Add minimal support for _res setup and update.

Change res_init() to initialize the _res structure on first call, and
udpate the global async context if changes were made by the user. All
resolver functions now call res_init() internally.

fixes issue spotted by otto@

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split asr_resolver.c into different files to overlay the libc/net
resolver implementation.