Metacat

Implemented 4 rules to determine the head version of a sid chain.
Add the test case 14 for testing.

Add a junit test for the converter.

Add the code to test series id in the archive, delete, isAuthorized and systemMetadataChanged method.

Add the code to test the create and update methods using invalid sid in the system metadata.

Add the code to test getChecksum.

Add the test code for getSystemMetadata(sid) and describe(sid).

Add two updates on the testGetSID method.

Add the code to test getting test series ids.

Change methods'name base on the change on the source code.

Add the code to test the methods of determining if a sid or guid exists.