[PATCH] apr_sockaddr with APR_UNIX socket paths longer than sizeof(sun_path)

[Yann Ylavic <yl...@gmail.com>]

Hello,

the attached patch allows the APR to handle Unix Domain Socket paths
longer than the the limit imposed by the size of struct sockaddr_un
(for systems that support it, eg. *BSD), with no API/ABI change.

To do so, new functions to manipulate the different type of addresses
and socket internals (about local/remote addresses) are implemented in
network_io/unix/sockaddr.c, and declared in each
include/arch/*/apr_arch_networkio.h, like the existing
apr_sockaddr_vars_set().

This allows to also reuse code for non-unix platforms (Windows, OS/2),
hence all network_io/*/sockets.c have been modified (aligned) to use
them where needed.

The corresponding tests have also been added to the suite.

Unfortunatly I can't test nor even compile on Windows/OS2 currently,
testers welcome (TIA).

Thanks for your feedbacks.

Regards,
Yann.