SOLR-5880: Fix test failure when n=1. Make it at least 2.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1583722 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5795: New DocExpirationUpdateProcessorFactory supports computing an expiration date for documents from the TTL expression, as well as automatically deleting expired documents on a periodic basis (merge r1583734)

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1583741 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5829: Allow ExpandComponent to accept query and filter query parameters

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1583806 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-2446: add checksums to index files

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1583863 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5943: SolrCmdDistributor does not distribute the openSearcher parameter

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1584084 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5859 Harden Overseer restart

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1584085 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5795: harden leader check to log cleanly (no NPE) in transient situations when there is no leader due to election in progress (merge r1584097)

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1584099 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5859: add OCP.getCollectionStatus() param description for 'clusterState' to stop 'ant precommit' bitching 'Javadoc: Description expected after this reference' and failing the build (merged trunk r1584108)

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1584110 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5859 removing accidental removal of SOLR-5908 changes

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1584120 13f79535-47bb-0310-9956-ffa450edef68
Merged revision(s) 1584213 from lucene/dev/trunk:
SOLR-5951: Fixed SolrDispatchFilter to throw useful exception on startup if SLF4j logging jars are missing

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1584214 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5920: Maven config: restrict conversion of module names containing 'analysis-' to 'analyzers-' to those not preceded by 'solr-' (merged trunk r1584260)

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1584261 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5859 improved logging, and fix a potential bug

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1584273 13f79535-47bb-0310-9956-ffa450edef68
Synchronize ivy-settings.xml across branches

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1584389 13f79535-47bb-0310-9956-ffa450edef68
Remove SOLR-5228 from the "New Features" section - its already in the "Other Changes" section (merged trunk r1584414)

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1584416 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5568: Fix benchmark default.codec to work

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1584423 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5950: Maven config: make the org.slf4j:slf4j-api dependency transitive (i.e., not optional) in all modules in which it's a dependency, including solrj, except for the WAR, where it will remain optional. (merged trunk r1584473)

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1584474 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5567: When a suite fails with zombie threads failure marker and count is not propagated properly.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1584570 13f79535-47bb-0310-9956-ffa450edef68
Bump randomizedtesting-runner version to 2.1.3

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1584713 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5749: Renamed some stat names

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1584740 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5565: Refactor SpatialPrefixTree/Cell to not use Strings. Other misc API changes to these classes too.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1584795 13f79535-47bb-0310-9956-ffa450edef68