[MONDRIAN-1180] fix possible null pointer exception in existing()
[MONDRIAN-2210] add native implementation of Order() function
[MONDRIAN-1968] add native Exists() functionality
[MONDRIAN-2211] pre-evaluate StrToMember(Param()) use cases to support a
wider variety of native evaluation scenarios.
[MONDRIAN-1912] Pre-Calculate Sub-Cube checks for more efficient
processing.
[MONDRIAN-1933] Allow Native Subset to wrap other Native Evaluation
scenarios, supporting more SQL pushdown for subsets.
[MONDRIAN-2212] support nativization of top count in virtual cubes.
[MONDRIAN-1861] fixed issue with expanding member check in compound slicer
evluation.
[MONDRIAN-2213] Optimize Primary Key Columns to their Foreign Keys if
possible.
[MONDRIAN-1968] imports and code cleanup
[MONDRIAN-2214] added the ability to execute native evaluation sql queries
in parallel.
[MONDRIAN-1968] updated exists() test case to mark the issue with ordering
of pre-defined sets.