Bug#535630: ssh: searchs xauth in /usr/X11R6/bin/ which doesn't exist

[Jens Seidel <jensseidel@users.sf.net>]

Package: openssh-client
Version: 1:5.1p1-6

Connecting to a server via ssh option -X results in the error message:
sh: /usr/X11R6/bin/xauth: No such file or directory

xauth itself depends on x11-common and according to #362832 it provided a
link for /usr/X11R6/bin in the past. But this is no longer true so please
try to search for xauth in /usr/bin and fall back to /usr/X11R6/bin/xauth ...

ii  xauth                             1:1.0.3-2
ii  x11-common                        1:7.4+3 

Jens