patch applied (packages/base): Add System.Timeout to base.cabal

[Ian Lynagh]

Sun May 27 05:33:14 PDT 2007  Ian Lynagh <igloo at earth.li>
  * Add System.Timeout to base.cabal
  Filtered out for non-GHC by Setup.hs.

    M ./Setup.hs -1 +1
    M ./base.cabal +1