getting rid of gethostby* calls

[Dan Nicolaescu]

Ulrich Drepper is trying to get rid of all the gethostby* calls in
Fedora. 
emacs has been given as an example of program that uses the gethostby*
functions.

An example on how to use getaddrinfo instead of gethostby* is here:

http://people.redhat.com/drepper/userapi-ipv6.html

There are just a few instances of gethostby* in the emacs tree, can
someone that understands that code please take a look? 

Thanks