also set JAVACMD env var (sometimes ant uses only that and doesn't fallback to JAVA_HOME)
also set JAVACMD env var (sometimes ant uses only that and doesn't fallback to JAVA_HOME)

git-svn-id: 308d55f399f3bd9aa0560a10e81a003040006c48@1405956 13f79535-47bb-0310-9956-ffa450edef68

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