Revert use of hexfloat for wasm in spec2k tests.

tests/spec2k/175.vpr/run.ref.sh

 #!/bin/bash
 # Copyright (c) 2011 The Native Client Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 set -o nounset
 set -o errexit
 
 PREFIX=${PREFIX:-}
 VERIFY=${VERIFY:-yes}
 EMU_HACK=${EMU_HACK:-yes}
 
 python ../prepare_input.py --config $(basename $(pwd)) ref
 
 if [[ "${EMU_HACK}" != "no" ]] ; then
   touch costs.out place.out route.out
 fi
 
-ARGS1="-nodisp -place_only -init_t 5 -exit_t 0x1.47ae147ae147bp-8 -alpha_t \
-        0x1.e1e4f765fd8aep-1 -inner_num 2"
-ARGS2="-nodisp -route_only -route_chan_width 15 -pres_fac_mult 2 -acc_fac 1 \
-       -first_iter_pres_fac 4 -initial_pres_fac 8"
+ARGS1="-nodisp -place_only -init_t 5 -exit_t 0.005 -alpha_t 0.9412 -inner_num 2"
+ARGS2="-nodisp -route_only -route_chan_width 15 -pres_fac_mult 2 -acc_fac 1 -first_iter_pres_fac 4 -initial_pres_fac 8"
 
 
 ${PREFIX} $1  ${DASHDASH} net.in arch.in place.out dum.out ${ARGS1} \
   >place_log.out 2>stderr1.out
 
 ${PREFIX} $1  ${DASHDASH} net.in arch.in place.in route.out ${ARGS2} \
   >route_log.out 2>stderr2.out
 
 LIST="place_log.out route_log.out costs.out route.out"
 
 if [[ "${VERIFY}" != "no" ]] ; then
    echo "VERIFY"
    for i in ${LIST} ; do
      # NOTE: we are a little more conservative than spec with regard to reltol.
      # (the normal harness uses weaker reltols for some files).
      ../specdiff.sh -r 0.015 -l 10 $i data/ref/output/$i
    done
 fi
 echo "OK"