Regressions on trunk at revision 190110 vs revision 190109

[H.J. Lu ia32]

New failures:
FAIL: gfortran.dg/bound_8.f90  -O3 -fomit-frame-pointer -funroll-loops  (test for excess errors)
FAIL: gfortran.dg/internal_pack_4.f90  -O1  (test for excess errors)
FAIL: gfortran.dg/namelist_use.f90  -O2  (test for excess errors)

New passes:
FAIL: gfortran.dg/array_constructor_33.f90  -O  (test for excess errors)
FAIL: gfortran.dg/bounds_check_array_ctor_6.f90  -O2  (test for excess errors)
FAIL: gfortran.dg/list_read_7.f90  -Os  (test for excess errors)
FAIL: gfortran.dg/read_infnan_1.f90  -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions  (test for excess errors)
FAIL: gfortran.dg/used_interface_ref.f90  -O0  (test for excess errors)