spectral-norm: Move -fexcess-precision to OPTIONS_GHC

shootout/spectral-norm/Main.hs

@@ -14,6 +14,7 @@
 -- Should be run with:
 -- 	+RTS -N<number of cores>
 {-# LANGUAGE BangPatterns, MagicHash #-}
+{-# OPTIONS_GHC -fexcess-precision #-}
 
 import System.Environment
 import Foreign.Marshal.Array

shootout/spectral-norm/Makefile

@@ -8,4 +8,3 @@ SLOW_OPTS = 5500  # official shootout setting
 
 # The benchmark game also uses -fllvm, which we can't since it might
 # not be available on the developer's machine.
-HC_OPTS += -fexcess-precision