Couple 'o CUnit Integration Tests

- Ported all tests from CppUTest back to CUnit to keep things 99.44% pure
- Tested build on OSX 10.9.2 and Ubuntu 13.10
- Fixed how CUnit was reporting its errors back to `make`
- Fixed a `riak_binary` test
- Added integration tests for ping, server info, list keys and list buckets
- Other messages to follow in subsequent PRs