Status lines for Emacs and Vim have been added to Python sources so
they'll be easier to edit using Python's preferred coding style.
Some DNS helper functions have been broken up into multiple files. It's
nice to have one function per file whenever possible, since that way we
don't need -ffunction-sections. Another reason it's good to have small
source files, is because the build will be enforcing resource limits on
compilation and testing soon.
For every call of getservbyname/getservbyport the lookup of
/etc/services is done by opening the file and parsing each line
one-by-one. This is slow, but the implementation is simple.
This change also adds fixes for the gethostbyname function.
gethostbyname, gethostbyaddr follow simple implementations: they
internally call getaddrinfo and getnameinfo respectively, and fill out
the minimum details. remaining functions are stubs.
