[PATCH 1/4] GDBSERVER: Listen on a unix domain (instead of TCP) socket if requested.

[Eli Zaretskii]

> From: John Darrington <john@darrington.wattle.id.au>
> Cc: John Darrington <john@darrington.wattle.id.au>
> Date: Sat, 13 Oct 2018 19:57:58 +0200
> 
> When invoking gdbserver, if the COMM parameter takes the form "unix::/path/name"
> then a local (unix) domain socket will be created with that name and gdbserver
> will listen for connections on that.
> 
>     gdb/
>     * NEWS: Mention new feature.
> 
>     gdb/gdbserver/
>     * configure.ac (AC_CHECK_HEADERS): Add sys/un.h.
>     * configure: Regenerate.
>     * remote-utils.c (remote_prepare): Create a local socket if requested.
>      (remote_open):  Don't attempt to open a file if it's a socket.
>      (handle_accept_event): Display the name of the socket on connection.
> 
>    gdb/common/
>    * netstuff.c (parse_connection_spec)[prefixes]: New member for local domain sockets.

OK for the NEWS part.

Thanks.