Initial refactoring for generic generator.

Start with basic changes for generator.  First step, try moving the operation
generation piece to a new class.  For now, just use static methods.

git-svn-id: https://groke.mcmaster.ca/svn/grad/colin/branches/TableTool_javization@10327 57e6efec-57d4-0310-aeb1-a6c144bb1a8b