Metacat

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.jar
rework MetacatClient (and other classes) to use httpclient 4
updated build to not create httpclient.jar
encoding 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.