patch applied (ghc): use the new " prim %write_barrier()" in .cmm instead of calls to wb()

[Simon Marlow]

Thu Jun 29 05:05:26 PDT 2006  Simon Marlow <simonmar at microsoft.com>
  * use the new "prim %write_barrier()" in .cmm instead of calls to wb()

    M ./includes/SMP.h -3 +3
    M ./rts/RaiseAsync.c -2 +2
    M ./rts/Updates.h -23 +23