SES-1902 prevent deadlock by making sure registering of iteration
completes successfully (otherwise, close iteration).
SES-1905 : Ensure that TupleQueryResult is closed in QueryResults.report

Also add javadoc to describe the base contract for the two report
methods.
Merged in ses-1902 (pull request #182)

SES-1902 prevent deadlock by making sure registering of iteration
Merged in SES-1905 (pull request #183)

SES-1905 : Ensure that TupleQueryResult is closed in QueryResults.report
set version number to 2.7.4
[maven-release-plugin] prepare release 2.7.4
[maven-release-plugin] prepare for next development iteration
SES-1906 added test case which demonstrates the bug.
SES-1906 fix for handling of DESCRIBE query with WHERE clause. Using
ExtensionElems to create a tupleExpr.
SES-1906 cleanup and javadoc edits
SES-1906 simplified implementation by adding a projection and using
getBindingNames to retrieve describe clause items.
SES-1906 added extra test and several fixes in DescribeIteration to deal
with various corner cases properly.
SES-1906 modified parser to only include Extension in the algebra for
describe when necessary.
SES-1907 Changed path of *sql.ttl files to match loading code in Workbench and Console.

Added regression test to Workbench code.
Merged in ses-1906 (pull request #184)

SES-1906 fixes for handling of DESCRIBE...WHERE queries
Merged in SES-1907 (pull request #185)

SES-1907 Changed path of *sql.ttl files to match loading code in Workbench and Console.
set version number to 2.7.5
[maven-release-plugin] prepare release 2.7.5
[maven-release-plugin] prepare for next development iteration