Merge pull request #30 from portisheadaff/evergreen

Evergreen
[MONDRIAN-2057] For hierarchies with explicit default members, use the
single member for axis evaluation.
Merge branch 'evergreen' of https://github.com/wgorman/mondrian into evergreen
[MONDRIAN-1721] added support for base cube measures appearing in second
parameter of NonEmpty() function
LinkMember refactor for not working cases and add tests