QPID-6242: [Java Broker] Fix defect on Windows 7 where the newly created empty y file was not writable

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1641645 13f79535-47bb-0310-9956-ffa450edef68
NO-JIRA: Improve the Timer/TimerTask documentation.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1641658 13f79535-47bb-0310-9956-ffa450edef68
QPID-6248 [linearstore] Symlink creation fails if store dir path is not absolute

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1641689 13f79535-47bb-0310-9956-ffa450edef68
QPID-6242: [Java Broker] Avoid "collection is empty" on Windows 7 if the newly created .keys directory has empty initial permission set

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1641770 13f79535-47bb-0310-9956-ffa450edef68