/usr/lib/x86_64-linux-gnu/libbisho-common.so is in libbisho-common-dev 0.27.2+git20111122.9e68ef3d-3+b1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libbisho-common.so.0.0.0