SOLR-4394: Tests and example configs demonstrating SSL with both server and client certs

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1445971 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-4775: nuke SegmentInfo.sizeInBytes; fix OneMerge.totalBytesSize thread safety

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1445978 13f79535-47bb-0310-9956-ffa450edef68