SOLR-4421,SOLR-4165: Fix wait loop to sleep, reduce max wait time, wait min 1 second

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1446939 13f79535-47bb-0310-9956-ffa450edef68
tests: raise default so timeout

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1446941 13f79535-47bb-0310-9956-ffa450edef68
SOLR-4467: Ephemeral directory implementations may not recover correctly because the code to clear the tlog files on startup is off.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1446942 13f79535-47bb-0310-9956-ffa450edef68
SOLR-4467: CHANGES entry

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1446943 13f79535-47bb-0310-9956-ffa450edef68