Add full support for VARCHAR by character. Fix the EE test cases. Add Junit test cases
Use new way to validate varchar by characters. Clean up the test cases
fix the warnings
Fix the test cases with changed error message. Merge related test cases
Merge branch 'master' of github.com:VoltDB/voltdb into ENG-5875-final
Merge branch 'master' of github.com:VoltDB/voltdb into ENG-5875-final
Clean up based on Paul's comments
Merge pull request #1244 from VoltDB/ENG-5875-final

Eng 5875 final