Add placeholder servlet context listener

git-svn-id: https://svn.apache.org/repos/asf/jena/trunk@1532755 13f79535-47bb-0310-9956-ffa450edef68
Fix handling of memory locations

git-svn-id: https://svn.apache.org/repos/asf/jena/trunk@1532756 13f79535-47bb-0310-9956-ffa450edef68
Revert changes

git-svn-id: https://svn.apache.org/repos/asf/jena/trunk@1532768 13f79535-47bb-0310-9956-ffa450edef68
Enable new optimization which promotes table empty up the algebra where possible allowing the query engine to avoid as much work as possible

git-svn-id: https://svn.apache.org/repos/asf/jena/trunk@1532787 13f79535-47bb-0310-9956-ffa450edef68
Ignore tests which are known to cause resource exhaustion on some build platforms

git-svn-id: https://svn.apache.org/repos/asf/jena/trunk@1532801 13f79535-47bb-0310-9956-ffa450edef68
Merge remote-tracking branch: upstream/trunk