Make LocationLock error messages more detailed in a couple of cases (JENA-648)

git-svn-id: https://svn.apache.org/repos/asf/jena/trunk@1612533 13f79535-47bb-0310-9956-ffa450edef68
Issue a warning when unable to obtain a PID when trying to obtain the lock (JENA-648)

git-svn-id: https://svn.apache.org/repos/asf/jena/trunk@1612535 13f79535-47bb-0310-9956-ffa450edef68
JENA-749 : Remove tuples handling from StreamRDF interface.
See JIRA for patches that capture the changes as well.

git-svn-id: https://svn.apache.org/repos/asf/jena/trunk@1612543 13f79535-47bb-0310-9956-ffa450edef68
Inaccessible public internet should not cause test failures.

git-svn-id: https://svn.apache.org/repos/asf/jena/trunk@1612546 13f79535-47bb-0310-9956-ffa450edef68