[PATCH v3] ws2_32: Very minimal support for AF_UNIX.

[Richard W.M. Jones]

I haven't added any tests yet as the wine/dlls/ws2_32/tests/sock.c
fiile is rather daunting.

However it does fix a signficant bug - I forgot to translate the
filename in the sun_path field from a Windows name to a Unix name.
This happened to work by accident with my server which was setting a
relative path here, but as soon as I used an absolute path for the
socket it revealed the bug in my Wine patch.

Rich.