EAGLESIX-2723 minor changes to ExpressionToUpper, test cases filled out.
Merge branch 'feature/mongo_2.6.5_expressions' into feature/mongo_2.6.5_expressions_ToUpper
EAGLESIX-2651: ToUpper: better sync w/ 2.6.5 tests, minor formatting to code
Merge pull request #78 from RiveraGroup/feature/mongo_2.6.5_expressions_ToUpper

Feature/mongo 2.6.5 expressions ToUpper