Bump randomizedtesting-runner version to 2.1.3

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1584712 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5749: Renamed some stat names

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1584739 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5527: Refactor Collector API to use a dedicated Collector per leaf.


git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1584747 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/trunk@1584793 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5501: Improved out-of-order collection testing.


git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1584829 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5574: when closing an NRT reader, do not delete files if the original writer has since been closed

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1584840 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5570: don't let fsync create new zero-byte files

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1584860 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5574: disable this test on Windows

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1584868 13f79535-47bb-0310-9956-ffa450edef68
Make Exception more readable (those coming from -Dtests.directory=NonExistentDir). We have Rethrow calss for that!

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1584883 13f79535-47bb-0310-9956-ffa450edef68
Remove crazy scanning for method, its easier that way!

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1584894 13f79535-47bb-0310-9956-ffa450edef68
Merging with trunk.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/solr5914@1585024 13f79535-47bb-0310-9956-ffa450edef68