Mulgara

The scripted TQL tasks failed to return some data that was encoded with base64. This may be something in the string pool or some strange interaction with something else, as I haven't looked too closely at it yet. Every other data type appears OK, so far.

The problem appears in the tests in jxtest/iTQL/data_types/binary/base64Binary. The third test should give the results in queryResult3.txt, but the results are instead empty (the result is still well formatted, but contains an empty set).