Log Message:
- updated packages to 0.18
ChangeLog:
0.17  Sun Feb  3 22:30:30 GMT 2008
    - Be compatible with internals changes post-5.10
      (new loop contexts & CxLVAL)
0.18  Mon Feb  4 09:35:56 GMT 2008
    - Code identical to 0.17; eliminate ._files by using gnutar.