Add Server Error integration tests
Rename riak_error message to riak_server_error to avoid conflict with Riak Error
Fix typo in riak_server_error_response_free
Clean up leaked memory in error state
- Also fix how riak_c_cunit runs only integration or unit tests
Add some comments about server error test case per @metadave
Merge pull request #70 from basho/feature/bch/add-error-integration-tests

Add Integration Tests for Server Error