Bug#328487: libfs6: doesn't clean up a shlib symlink?

[Lars Wirzenius <liw@iki.fi>]

Package: libfs6
Version: 6.8.2.dfsg.1-6

Testing libfs6 with piuparts, I get:

0m6.9s ERROR: Package purging left files on system:
  /usr/X11R6
    owned by: libfs6
  /usr/X11R6/lib
    owned by: libfs6
  /usr/X11R6/lib/libFS.so.6

In the postrm, when $1 is remove, deregister_x_lib_dir_with_ld_so is
called before ldconfig. This means that ldconfig does not know that it
needs to go remove dangling symlinks in /usr/X11R6/lib. Calling them in
the other order would seem correct, I think, but admittedly I'm not very
familiar with shlibs stuff.