This gives hte list of tests with unexpected results, so that you can
easily run them again.

We now use *_range_field everywhere instead

dph: tests with dph-lifted-copy need to use '-fno-vectorisation-avoidance if scalar closures get too big

We were getting a
    Creating library file: dist\build\libHStest-1.0-ghc7.7.20130205.dll.a
message on stderr. We can't turn it off, so now the test just normalises
it away.

Otherwise, you get annoying failures if you run 'make fast stage=1'.

Signed-off-by: Austin Seipp <mad.one@gmail.com>

We now use pre_cmd rather than cmd_prefix wherever possible.
Also, pass "-s --no-print-directory" whenever we use pre_cmd.

Fixes the test on Windows