SES-2046 DescribeIteration now checks corner cases for multiple describe
values where blank node has no further expansion. compliance tests
added, all greenline.
SES-2094 fix for hang on namespace CountdownLatch when parsing produces
error. Unit test which demonstrates the bug, now greenlines.
SES-2094 : Ensure that in.close and queue.close are both called
SES-2094 : Rename test to use suffix

Also use ExpectedException to ensure that the exception is thrown from a
known point.
SES-2094 : Test data is irrelevant with the dummy parser
SES-2094 : Ensure that any future super.handleClose method cannot
disturb the semantics here
Merged in SES-2046-describe-partial (pull request #305)

SES-2046 DescribeIteration now checks corner cases for multiple describe values with bnodes
Merged in SES-2094-BackGroundGraphResult (pull request #306)

SES-2094 fix for hang on namespace CountdownLatch when parsing produces exception
[maven-release-plugin] prepare release sesame-2.7.13
[maven-release-plugin] prepare for next development iteration
Merge branch '2.7.x' into 2.8.x

Conflicts:
	all pom.xml files
	core/http/client/src/main/java/org/openrdf/http/client/BackgroundGraphResult.java