4.1 -> 4.2

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1433064 13f79535-47bb-0310-9956-ffa450edef68
SOLR-2592: changes entry for doc routing

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1433084 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-4676: Use NoMergePolicy in starvation test to prevent buffered deletes pruning

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Maven configuration: 4.1 -> 4.2

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1433158 13f79535-47bb-0310-9956-ffa450edef68
IntelliJ configuration: 4.1 -> 4.2

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1433162 13f79535-47bb-0310-9956-ffa450edef68
fix test bug

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 U   solr (merged trunk r1433204)

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Wrap long line, add spreadsheet filename extension (merged trunk r1433239)

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Add 4.1 indexes to TestBackwardsCompatibility (merged trunk r1433281)

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fix minimumSimilarity -> maxEdits in javadocs

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LUCENE-4684: Made DirectSpellChecker extendable.

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LUCENE-4684: Moved change entry log.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1433443 13f79535-47bb-0310-9956-ffa450edef68
SOLR-4016: Deduplication does not work with atomic/partial updates so disallow atomic update requests which change signature generating fields.

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Merged revision(s) 1433652 from lucene/dev/trunk:
LUCENE-4465: Let ConstantScoreQuery's Scorer return its child scorer.

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SOLR-4256: Fix parameter name in javadocs (useWhiteList->useWhitelist) (merged trunk r1433660)

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cleaned up class javadoc

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fix for SOLR-4300, race condition when loading lazy cores from multiple threads

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docs: update description of updateLog / autoCommit in solrconfig

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SOLR-4300: In TestLazyCores, convert static field into local variable to avoid post-test memory retention

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LUCENE-4602: migrate facets to DocValues

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