[MONDRIAN-1949] Add generic method to identify a database product.
Use the new static method on the Dialect as the fallback means to
determine the database product. Take advantage of equalsIgnoreCase
as it does null checks, and it handles case properly, and optimizes
for ordinary equivalence. Add NuoDB Dialect support, and related
documentation.
Merge pull request #263 from rbuck/lagunitas

[MONDRIAN-1949] Add generic method to identify a database product and NuoDB support