Created a version of CodecsTest that's a spock test - CodecsSpecification.  This test shows spock doing nice comparisons on Objects that don't implement an equals method.
Created a version of CodeWithScopeTest that's a spock test - CodeWithScopeSpecification.  This test shows spock doing nice comparisons on Objects that don't implement an equals method.
Created DBRefCodecSpecification, a spock version of DBRefCodecTest
Converted all the codec tests that currently use JMock to spock tests.  Right now, the original Junit and the new Spock tests both live in parallel, so we can check the difference
Added first Spock stub