Empowers inherited permissions throughout Civi. Note that the latest version allows you to specify that certain relationships should alsways be permissioned BUT it is dependent on https://github.com/eileenmcnaughton/nz.co.fuzion.entitysetting
Because of the dependency the later version is not available for automated download You also need this commit (in 4.4.6) https://github.com/civicrm/civicrm-core/commit/9deb4ed30cd8127c8e187016b6e2d6bc3b03bcbc