Code review comment for lp:~zorba-coders/zorba/bug1147563

Only 7 of the failures were fixed (as you can see from the changes in 'test/fots/CMakeLists.txt').

There are 8 more failures and, from what I've seen all check the behaviour of the fn:nilled in XQuery 1.1 (please see that there is a XQ10 dependency for these tests).

This is the <a href="http://www.w3.org/TR/2009/WD-xpath-functions-11-20091215/#func-nilled">fn:nilled spec in XQuery 1.1</a> and this in the <a href="http://www.w3.org/TR/xpath-functions-30/#func-nilled">fn:nilled spec in XQuery 3.0</a>.