SOLR-5814: CoreContainer reports incorrect & missleading path for solrconfig.xml when there are loading problems

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1622569 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5902: Make loadresource quiet

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1622572 13f79535-47bb-0310-9956-ffa450edef68