[jhc] bug in Makefile for mac os x build

12:43 ~/src/jhc_OLD % diff Makefile ../jhc/Makefile 708c708 < sed -e 's/^{-# OPTIONS/{-# OPTIONS_GHC -w/' -i $@ ---

sed -e 's/^{-# OPTIONS/{-# OPTIONS_GHC -w/' -i '' $@

sed on mac doesn't like it otherwise... Cheers Mark