LUCENE-5650: Enforce read-only access to any path outside the temporary folder via security manager (merged r1596767, r1600310)

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1620054 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5650: Enforce read-only access to any path outside the temporary folder via security manager (merged r1596767, r1600310)

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1620055 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5650: Move changes entry to reflect backport to 4x

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1620057 13f79535-47bb-0310-9956-ffa450edef68