patch applied (ghc): pad step_workspace to 64 bytes, to speed up access to gct->steps[]

[Simon Marlow]

Wed Apr 16 16:24:33 PDT 2008  Simon Marlow <simonmarhaskell at gmail.com>
  * pad step_workspace to 64 bytes, to speed up access to gct->steps[]

    M ./includes/Rts.h +6
    M ./rts/sm/GC.c +3
    M ./rts/sm/GCThread.h -1 +5

View patch online:
http://darcs.haskell.org/ghc/_darcs/patches/20080416232433-8214f-c87613ca5552719fb3dbcb3a0f384142bad704c5.gz