Fix: handles edge case 'no \n at end of csv dataset + empty last column'

[marilynel]

Fixes issue #943

[stleary]

What problem does this code solve?
Parses CDL docs that fail to include a newline and have a missing final value on the final line.
While this is a change in behavior, it should only affect CDL files that meet the above conditions.
Missing the final newline could happen unintentionally, and users may never notice that the last
row was omitted.

Does the code still compile with Java6?
Yes

Risks
Low

Changes to the API?
No

Will this require a new release?
No

Should the documentation be updated?
No

Does it break the unit tests?
No, a new unit test was added.

Was any code refactored in this commit?
No

Review status
APPROVED

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