SOLR-5164: fix relative solr.home testing on Windows

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1514939 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5162: Add back core implicit properties

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1515032 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5162: ...with the right license header this time

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1515035 13f79535-47bb-0310-9956-ffa450edef68