SOLR-6380: Added missing context info to log message if IOException occurs in processing tlog

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1618272 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6382: Add Java9 fix for RAMUsageTester (SecurityException when trying to do reflection on Class class)

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1618275 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5886: Improve Java version detection in Constants.java and common-build.xml, add Java 9 support

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1618278 13f79535-47bb-0310-9956-ffa450edef68