LUCENE-5969: recreate branch

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene5969@1627945 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5969: assert -> check

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LUCENE-5969: assert -> check

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene5969@1627954 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5969: copy over cruft for back compat

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LUCENE-5969: remove some cruft, header -> segmentHeader

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene5969@1628024 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5969: cutover all merge implementations away from LeafReader[] to individual low-level producers

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene5969@1628026 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5969: fix compile/javadocs, tighten up backwards codecs, add more safety to 5.x fields/vectors

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene5969@1628070 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5969: add merge api

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LUCENE-5969: add missing checkIntegrity() calls for segments that cannot be bulk-merged

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene5969@1628077 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5911: Add MemoryIndex.freeze() to allow for thread-safe searching

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1628154 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6249: Schema API changes return success before all cores are updated

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1628181 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5977: Fix tokenstream safety checks in IndexWriter to work across multi-valued fields

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1628192 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6511: adjust test logic to account for timing issues in zk session expiration scenario.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1628203 13f79535-47bb-0310-9956-ffa450edef68
add missing space

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1628325 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5969: current state for dv/norms

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LUCENE-5969: add segment suffix safety

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene5969@1628386 13f79535-47bb-0310-9956-ffa450edef68
init new example class before each example is run

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1628399 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5938: Add a new sparse fixed bit set and remove ConstantScoreAutoRewrite.


git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1628402 13f79535-47bb-0310-9956-ffa450edef68
create all indexes w/ OpenMode.CREATE in facet demos

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1628410 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5969: fix nocommit

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