On the log-addressing branch:  Provide an updated BRANCH-README.
We inherited that file from our parent branch 'fsfs-improvements'.

* BRANCH-README
  (): Describe purpose and goals for this branch

git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/log-addressing@1509296 13f79535-47bb-0310-9956-ffa450edef68