/usr/share/doc/libbisho-common0-dbg/AUTHORS is in libbisho-common0-dbg 0.27.2+git20111122.9e68ef3d-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libbisho-common0-dbg/../libbisho-common0/AUTHORS