Codebase fails checkstyle checks.

The project currently has a large number of Checkstyle errors. The majority of these are in the test classes, which either need a major cleanup exercise or should be excluded from the checks.

The errors on the non-test code are not too numerous and the attached patch corrects all but one of these. The patch also adds a suppression file that removes the test classes from the Checkstyle checks. With the patch applied, I'm able to withstand having Checkstyle auto-running in my IDE.