
- Implement wait-for-input-internal for
    * SBCL Win32

- Implement errors for (the alien interface code of)
    * SBCL Unix
    * CMUCL Unix
    * OpenMCL


- Extend ABCL socket support with the 4 java errors in java.net.*
  so that they can map to our usocket errors instead of mapping
  all errors to unknown-error.

- Add INET6 support.

For more TODO items, see http://trac.common-lisp.net/usocket/report.
