RE: ghc/lib/cbits/system.c doesn't compile

[Simon Marlow]

> ==fptools== gmake all --no-print-directory -r;
>  in /usr/local/pub-bkb/ghc/fptools/ghc/lib/std/cbits
> --------------------------------------------------------------
> ----------
> ../../../driver/ghc-inplace -O -I../../../includes 
> -I../../../rts  -Wall -static    -c system.c -o system.o
> system.c:71: warning: implicit declaration of function `vfork'
> system.c:83: variable `tv_null' has initializer but incomplete type
[ etc. ]

This should be fixed now.

Cheers,
        Simon