LUCENE-5686: fail if LUCENE/SOLR_NNNN (_ instead of -) appears in changes

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1596039 13f79535-47bb-0310-9956-ffa450edef68
woops, revert

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1596043 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5686: fail if LUCENE/SOLR_NNNN (_ instead of -) appears in changes

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1596044 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5678: Use FileOutputStream instead of RandomAccessFile to write index data. BufferedIndexOutput and related APIs were removed.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1596057 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5681: Make the OverseerCollectionProcessor multi-threaded

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1596089 13f79535-47bb-0310-9956-ffa450edef68