Merge branch ACME-Climate/ndk/cam/disableFPchecks3 (PR #1444)

Disable FP checks for a certain LAPACK routine (only for cori-knl, only DEBUG, only Intel compiler) 

Disable FP checks for a certain LAPACK routine, by using ieee_exceptions module
to turn off FP trapping that is enabled by -fpe0.
Only for DEBUG builds, only for cori-knl, and only for Intel compiler.
Fixes #1183
[BFB]

config/acme/machines/config_compilers.xml

@@ -596,8 +596,7 @@ for mct, etc.
   <ADD_SLIBS> -L$(NETCDF_DIR) -lnetcdff -Wl,--as-needed,-L$(NETCDF_DIR)/lib -lnetcdff -lnetcdf </ADD_SLIBS>
   <ADD_SLIBS> -mkl -lpthread -lm </ADD_SLIBS>
   <ADD_GPTL_CPPDEFS> -DHAVE_PAPI </ADD_GPTL_CPPDEFS>
-  <ADD_CPPDEFS>  -DHAVE_SLASHPROC </ADD_CPPDEFS>
-  <!--ADD_CPPDEFS>  -DHAVE_NANOTIME -DBIT64 -DHAVE_VPRINTF -DHAVE_BACKTRACE -DHAVE_SLASHPROC -DHAVE_COMM_F2C -DHAVE_TIMES -DHAVE_GETTIMEOFDAY  </ADD_CPPDEFS> -->
+  <ADD_CPPDEFS> -DARCH_MIC_KNL -DHAVE_SLASHPROC </ADD_CPPDEFS>
   <MPIFC> ftn </MPIFC>
   <MPICC> cc </MPICC>
   <MPICXX> CC </MPICXX>