LUCENE-1414: increase max heap size when running unit tests to 512M
LUCENE-1414: increase max heap size when running unit tests to 512M

git-svn-id: 4c5078813df38efa56971a28e09a55254294f104@702889 13f79535-47bb-0310-9956-ffa450edef68

apache/solr,apache/solr,apache/solr,apache/solr,apache/solr