add 4.7 changes section

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1541584 13f79535-47bb-0310-9956-ffa450edef68
fix "upgrading from" version

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1541587 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5437

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1541600 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5322: define-lucene-javadoc-url should only be called once as part of Solr's  generate-maven-artifacts

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1541653 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5399: Add distributed request tracking information to DebugComponent

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1541774 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5437

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1541830 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5308: A new 'migrate' collection API to split all documents with a route key into another collection

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1541832 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5438: DebugComponent throws NPE when used with grouping

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1541849 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5441: Expose number of transaction log files and their size via JMX

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1541999 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5341: automate default codec package extraction for use in the generated Lucene documentation's link to the index file format documentation

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1542012 13f79535-47bb-0310-9956-ffa450edef68
- 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
Allow trailing colons in CHANGES.txt section names

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1542027 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5399: fix windows test issue

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1542080 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5441: the null-pointer patch addition

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1542142 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5421: Remove double set of distrib.from param in processAdd method of DistributedUpdateProcessor

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1542177 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5283: allow top-level testcase filters.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1542198 13f79535-47bb-0310-9956-ffa450edef68
don't let maxMergedSegmentMB be 0.0

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1542234 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5320: Added support for tri-level compositeId routing

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1542272 13f79535-47bb-0310-9956-ffa450edef68
fix javadoc

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1542305 13f79535-47bb-0310-9956-ffa450edef68
 LUCENE-5342: Fixed bulk-merge issue in CompressingStoredFieldsFormat


git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1542311 13f79535-47bb-0310-9956-ffa450edef68