patch applied (ghc): don't shrink the stack smaller than the value set by +RTS -k<size>

[Simon Marlow]

Fri May 29 02:08:27 PDT 2009  Simon Marlow <marlowsd at gmail.com>
  * don't shrink the stack smaller than the value set by +RTS -k<size>
  Ignore-this: 4034b691895bc2fb3a1eaa2195a9ae31

    M ./includes/Block.h +9
    M ./rts/Schedule.c +2

View patch online:
http://darcs.haskell.org/ghc/_darcs/patches/20090529090827-12142-c41d24e1865bb7bca46afd5358ae7c7fa7f20589.gz