MONDRIAN-1771 - TupleReader needs a couple methods that were only on SqlTupleReader
Merge pull request #182 from kurtwalker/MONDRIAN-1771

MONDRIAN-1771 - TupleReader needs a couple methods that were only on SqlTupleReader
MONDRIAN-1771 - changing DBStatement to return Map of accessors instead of List
Merge pull request #185 from kurtwalker/MONDRIAN-1771

MONDRIAN-1771 - changing DBStatement to return Map of accessors instead of List
MONDRIAN-1771 - Generifying LevelColumnLayout so that we can create a mongo version that uses Strings instead of ints.
Merge pull request #187 from kurtwalker/MONDRIAN-1771

MONDRIAN-1771 - Generifying LevelColumnLayout so that we can create a mo...
MONDRIAN-1771 - method name changes and documentation based on discussions this morning
Merge pull request #189 from kurtwalker/MONDRIAN-1771

MONDRIAN-1771 - method name changes and documentation based on discussio...
MONDRIAN-1771 - adding extension point for JdbcSchemaFactory
MONDRIAN-1771 - adding second point for getting the SegmentLoader.  making loadImpl protected so it can be overridden
[MONDRIAN-1771] Makes loadImpl a protected method.
Merge branch 'mongolap' into MONDRIAN-1771
Merge pull request #190 from kurtwalker/MONDRIAN-1771

MONDRIAN-1771 - adding extension point for JdbcSchemaFactory, additional point for segment loader.
[MONDRIAN-1772] Set the Table.Column constructor to be public so external implementations of JdbcSchema can create them.
Merge pull request #191 from mkambol/column

[MONDRIAN-1772] Set the Table.Column constructor to be public so externa...