patch applied (ghc): gcc is getting smarter, so we need to hit it with a bigger stick

[Simon Marlow]

Thu Mar 23 05:36:39 PST 2006  Simon Marlow <simonmar at microsoft.com>
  * gcc is getting smarter, so we need to hit it with a bigger stick
  On x86_64 we are using C argument registers for global registers in
  the STG machine.  This is always going to be problematic when it comes
  to making C calls from STG and compiling via C.  Prior to GCC 4.1.0
  (approx) it was possible to just assign the argument expressions to
  temporaries to avoid a clash.  Now, we need to add an extra dummy
  function call as a barrier between the temporary assignments and the
  actual call.  The dummy call is removed by the mangler.

    M ./ghc/compiler/cmm/PprC.hs +9