LUCENE-4987: Upgrade randomized testing to version 2.0.10: 
Test framework may fail internally due to overly aggresive J9 optimizations. 




git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1480457 13f79535-47bb-0310-9956-ffa450edef68
SOLR-4797: Shard splitting creates sub shards which have the wrong hash range in cluster state. This happens when numShards is not a power of two and router is compositeId

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1480478 13f79535-47bb-0310-9956-ffa450edef68
SOLR-4803: Fixed core discovery mode (ie: new style solr.xml) to treat 'collection1' as the default core name

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1480515 13f79535-47bb-0310-9956-ffa450edef68
sync up NOTICE

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1480522 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-4986: NRT reopen after tryDeleteDocument was failing to reflect the deletion

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1480650 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-4990: Improve MockDirectoryWrapper.sync

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1480761 13f79535-47bb-0310-9956-ffa450edef68