odb: remove automatic generation of odb pragmas
odb: remove odb test model as it was added at the generator level
database: create model to exercise odb functionality

- model was renamed to "database" to avoid confusion with the odb
  prefixes and postfixes.
comments: add test for implementation specific parameters

- add hydrator test because we need to generate the dia XML file
- add SML test to ensure the implementation specific parameters are
  being converted into SML
- fix bug in ODB formatter where we where not checking to see if the
  implementation specific parameters were actually for ODB.
generator: rename odb postfix to pragmas to avoid confusion with odb generated code
database: add odb compiler support and odb generated files
database: add test skeleton
database: generate embedded schema instead of SQL
database: refactor no keys test

- delete existing rows
- add multiple objects
- check that the objects we added are returned on query
database: add second class to test model

- fix fallout in makefiles and schema generation
database: add foreign key scenario to test model
generator: regen test models after odb formatter changes