Added a new test method testDeleteDocumentByGUID() to ensure MetacatHandler can delete based on GUID, but fall back to docid if the GUID isn't present. Modified CrudServiceTest and made some private methods public to leverage the D1 REST calls in that library (i.e. create() a doc with a GUID).
Add a method to test download a schema with included schemas.
Add a test file for XMLSchemaServcieTest.
Add a junit test file for testing the XMLSchemaParser class.
removed comments from crudservicetest
fixed bugs in listObjects
remove httpclient 3.1 and custom-built httpclient.jarrework MetacatClient (and other classes) to use httpclient 4updated build to not create httpclient.jarencoding tests now pass.
Fix the MetadataTypeRegisterTest because it had the wrong URI for METS.
added code to do database query for listObjects
remove the empty dir.
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