Add version 4.6.


git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1522507 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-4906: PostingsHighlighter: add expert API to render highlights to Object

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1522619 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5204: Make Directory easier to wrap.


git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1522661 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5133: allow highlight to Object for AnalyzingInfixSuggester for advanced use cases

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1522667 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5148: optimization - lazy create child doc list

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1522680 13f79535-47bb-0310-9956-ffa450edef68
SOLR-4816: Don't create "loads" of LBHttpSolrServer's, shutdown LBHttpSolrServer when appropriate, get collection from nonRoutableParams.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1522684 13f79535-47bb-0310-9956-ffa450edef68
tests: harden

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1522701 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-4998: fix a few places to pass IOContext.READONCE instead of IOContext.READ

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1522722 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5206: fix javadocs to clarify FuzzyQuery's unexpected behaviour on short terms

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1522733 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5206: move CHANGES entry to 4.5

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1522737 13f79535-47bb-0310-9956-ffa450edef68