[SP-676] - backport for [MONDRIAN-1750] - compound slicer was overriding members as determined by CurrentDateMember function.  This issue has already been fixed by a combination of other cases, MONDRIAN-936, MONDRIAN-1226, and MONDRIAN-1587.  This commit just adds a test case.
Merge pull request #238 from kurtwalker/SP-676

[SP-676] - backport for [MONDRIAN-1750] - compound slicer was overriding...