testsuite: Unbreak galois_raytrace on i386

galois_raytrace was previously broken on i386 due to use of x87
arithmethic on that platform. However,
42504f4a removes x87 support; this
resulted in an unexpected pass. Unmark this test as broken.

testsuite/tests/programs/galois_raytrace/test.T

-# Floating point differences on x86 using the NCG
-if config.platform.startswith('i386-') and \
-       config.platform != 'i386-unknown-openbsd':
-    setTestOpts(expect_fail_for(['hpc','optasm','profasm','threaded2','profthreaded']))
-
 test('galois_raytrace', [extra_files(['CSG.hs', 'Construct.hs', 'Data.hs', 'Eval.hs', 'Geometry.hs', 'Illumination.hs', 'Intersections.hs', 'Interval.hs', 'Main.hs', 'Misc.hs', 'Parse.hs', 'Primitives.hs', 'Surface.hs', 'galois.gml']),
                          when(fast(), skip)],
      multimod_compile_and_run, ['Main', '-package parsec'])