- Move 'upgrading from previous version' section above the 'detailed change list' super-section
- Put parens around 'Elran Dvir via Erick Erickson' so that it gets recognized as an attribution

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1542019 13f79535-47bb-0310-9956-ffa450edef68