/usr/share/doc/libwinpr-synch0.1/README is in libwinpr-synch0.1 1.1.0~git20140921.1.440916e+dfsg1-15ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libwinpr-synch0.1/../libwinpr-interlocked0.1/README