git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene_solr_4_5@1531165 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5327: SOLR-4915, "The root cause should be returned to the user when a SolrCore create call fails", was reverted.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene_solr_4_5@1531167 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5317: SolrCore persistence bugs if defining SolrCores in solr.xml
tests: Compare absolute paths 
Fix race  when persisting cores in solr.xml

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene_solr_4_5@1531171 13f79535-47bb-0310-9956-ffa450edef68