Merged revision(s) 1637701 from lucene/dev/trunk:
LUCENE-5953: Fix null lock factory

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_5x@1637702 13f79535-47bb-0310-9956-ffa450edef68
Merged revision(s) 1637743 from lucene/dev/trunk:
LUCENE-5953: Revert changes to SnapShooter, just remove useless locking. The tests now pass more often, because snapshot directory does not disappear suddenly (its created explicitely before file copying

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_5x@1637744 13f79535-47bb-0310-9956-ffa450edef68
Merged revision(s) 1637754 from lucene/dev/trunk:
SOLR-5022: Reenable Hdfs tests on Java 8+, because they have no permgen. Windows is still disabled, because Hadoop needs Cygwin.

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Add issue ID to MIGRATE.txt and update text.

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SOLR-6579 SnapPuller Replication blocks clean shutdown of tomcat

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LUCENE-6055: PayloadAttribute.clone() should deep clone its BytesRef

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SOLR-6721: ZkController.ensureReplicaInLeaderInitiatedRecovery puts replica in local map before writing to ZK

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SOLR-6679: comment out suggester in stock config due to long startup times

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SOLR-6705: better handling of JVM version specific options

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SOLR-6705: better handling of JVM version specific options

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SOLR-6708: Smoke tester couldn't communicate with Solr started using 'bin/solr start'

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SOLR-6703: Fix lucene match version in configsets

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SOLR-6662: better validation when parsing command-line options that expect a value

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SOLR-6703: double check for conflicting port use before starting (backport fix from trunk)

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LUCENE-6053: add Serbian analyzer

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LUCENE-4400: Add NYSIIS Apache commons phonetic codec

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LUCENE-6059: add Daitch-Mokotoff Soundex phonetic Apache commons phonetic codec

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LUCENE-6058: explain that BeiderMorseFilter changed its behavior

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SOLR-6697: bin/solr start scripts allow setting SOLR_OPTS in solr.in.* (backport)

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LUCENE-6050: allow for MUST and MUST_NOT (in addition to SHOULD) context tags in Analyzing/BlendedInfixSuggester

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