create branch

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LUCENE-5178: add 'missing' support to docvalues (simpletext only)

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene5178@1514642 13f79535-47bb-0310-9956-ffa450edef68
Merged /lucene/dev/trunk:r1514641-1514711

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bump 4.5 codec

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make 4.2 read only / setup impersonator

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support missing for 4.5 and disk dv

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene5178@1515496 13f79535-47bb-0310-9956-ffa450edef68
improve DV faceting tests, support missing count for single valued string fields, remove required/default restriction

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add some sort missing last tests for dv

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move to test-framework (only needed for simulating old codecs which have no concept of missing)

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javadocs/cleanups

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add memorydv with missing support

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add checks

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improve tests

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Merged /lucene/dev/trunk:r1514712-1515613

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beef up tests

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add test

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beef up TestDuelingCodecs

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add a solr test for missing dv

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene5178@1515959 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5178: add missing support for docvalues

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1515977 13f79535-47bb-0310-9956-ffa450edef68