In avahi 0.7 the runtime_dir was updated to be /run instead of /var/run
for better systemd compatibility.  Patch out that change to fix
avahi-daemon.

Signed-off-by: Jeremiah McConnell <miah@miah.com>

Signed-off-by: Rosen Penev <rosenp@gmail.com>

Warning is:
   #warning redirecting incorrect #include <sys/poll.h> to <poll.

Not a big issue.
But it can be annoying when building with -Werror set.

Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>