SOLR-6780: Fixed a bug in how default/appends/invariants params were affecting the set of all keys found in the request parameters, resulting in some key=value param pairs being duplicated. (merge r1642740)

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_5x@1642760 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-6084: add reasonable IndexOutput.toString

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_5x@1642762 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6694: auto-detect JAVA_HOME using the Windows registry

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_5x@1642768 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6795: distrib.singlePass returns score even though not asked for

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_5x@1642775 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6694: fix misplaced percent found when fixing this issue

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_5x@1642781 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-6084: add reasonable IndexOutput.toString

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_5x@1642783 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-6084: what Hoss said

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_5x@1642785 13f79535-47bb-0310-9956-ffa450edef68