SOLR-6855: bin/solr -e dih launches, but has some path cruft issues preventing some of the imports don't work

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1647825 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6397: zkcli script put/putfile should allow overwriting an existing znode's data

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1647828 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6770 fixing test failures http://jenkins.thetaphi.de/job/Lucene-Solr-trunk-MacOSX/2013/

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1647829 13f79535-47bb-0310-9956-ffa450edef68
SOLR=6873: Lib relative path is incorrect for techproduct configset

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1647831 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6864: Improved tests, added useColdSearcher test case

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1647836 13f79535-47bb-0310-9956-ffa450edef68