patch applied (packages/base): `par` should be infixr 0

[Simon Marlow]

Fri Oct 27 06:08:00 PDT 2006  Simon Marlow <simonmar at microsoft.com>
  * `par` should be infixr 0
  Alas, I didn't spot this due to lack of testing, and the symptom is
  that an expression like x `par` y `seq z will have exactly the wrong
  parallelism properties.  The workaround is to add parantheses.
  
  I think we could push this to the 6.6 branch.

    M ./Control/Parallel.hs +2