LUCENE-5648: spatial NumberRangePrefixTree refactorings, mostly:
* rename NRPT.LevelledValue -> UnitNRShape, NRPT.NRShape -> SpanUnitsNRShape, both subclass new NRPT.NRShape marker class; make all 3 public and use these types in method signatures as appropriate.
* remove NRPT pass-through convenience methods on NRPTStrategy (not needed; maintenance burden)
* re-order some factory/parsing methods in NRPT to keep together at the top
* UnitNRShape implements Comparable, and both NRShape implements Cloneable
* improve randomized test to pick better random calendars
* more docs

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1645381 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6827: DateRangeField support for facet.range, exclusive ranges, DateMath

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1645383 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-6112: Fix compile error in FST package example code

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1645548 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-6106: Improve tracking of filter usage in LRUFilterCache.


git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1645613 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-6106: Fix test.


git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1645614 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6849: RemoteSolrException should report its source host

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1645622 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6849: Fix @Slow test

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1645695 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-6104: simplify internals of Lucene50NormsProducer

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1645711 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6849: Fix another @Slow test

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1645712 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6679: uncomment /suggest, but tie it to an sysprop so you have to go out of your way to enable on startup

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1645721 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6833: clean should remove example directories created by running bin/solr -e foo

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1645737 13f79535-47bb-0310-9956-ffa450edef68
ant regenerate to use latest packedints version

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1645838 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6852: SimplePostTool no longer defaults to collection1, also there's no default update URL

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1645866 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6852: Adding the CHANGES.txt entry

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1645868 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6849: And really fix it this time

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1645895 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-6107: Add stats to LRUFilterCache.


git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1645958 13f79535-47bb-0310-9956-ffa450edef68
Fix compiler warning.


git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1645962 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6852: Updating the CHANGES.txt entry to the 'Upgrading from..' section

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1646032 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-6116: Simplify RoaringDocIdSet.Iterator constructor.


git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1646041 13f79535-47bb-0310-9956-ffa450edef68
Fix typo

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1646083 13f79535-47bb-0310-9956-ffa450edef68