patch applied (ghc-6.6/packages/unix): don' t export nanosleep: we can' t change the API in 6.6

[Simon Marlow]

Fri Mar  2 06:04:59 PST 2007  Simon Marlow <simonmar at microsoft.com>
  * don't export nanosleep: we can't change the API in 6.6

    M ./System/Posix/Unistd.hsc -1 +1