Add analytics/test-lib folder and add contents to ignore list

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1625802 13f79535-47bb-0310-9956-ffa450edef68
allow for write.lock (NativeFSLF leaves this) too

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1625806 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5957: Add option for tests to not randomize codec

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1625812 13f79535-47bb-0310-9956-ffa450edef68