Update some script comments. Update sfc_climo_gen script to use

the 0.5-degree version of the soil substrate temperature
which will allow the use of more MPI tasks.

Fixes ufs-community#821.

ush/sfc_climo_gen.sh

@@ -70,7 +70,7 @@ fi
 cat << EOF > ./fort.41
 &config
 input_facsf_file="${input_sfc_climo_dir}/facsf.1.0.nc"
-input_substrate_temperature_file="${input_sfc_climo_dir}/substrate_temperature.2.6x1.5.nc"
+input_substrate_temperature_file="${input_sfc_climo_dir}/substrate_temperature.gfs.0.5.nc"
 input_maximum_snow_albedo_file="${input_sfc_climo_dir}/maximum_snow_albedo.0.05.nc"
 input_snowfree_albedo_file="${input_sfc_climo_dir}/snowfree_albedo.4comp.0.05.nc"
 input_slope_type_file="${input_sfc_climo_dir}/slope_type.1.0.nc"

util/sfc_climo_gen/sfc_gen.sh

@@ -48,14 +48,14 @@
 #                  - "modis.igbp.30s" for global 30s data
 #
 # soil_type_src - Input soil type data. Choices are:
+#                   For Beijing Norm. Univ. soil type data
+#                   - "bnu.v2.30s" for global 30s data
 #                   For STATSGO soil type data
 #                   - "statsgo.0.05" for global 0.05-deg data
 #                   - "statsgo.0.03" for global 0.03-deg data
 #                   - "statsgo.conus.30s" for CONUS 30s data
 #                   - "statsgo.nh.30s" for NH 30s data
 #                   - "statsgo.30s" for global 30s data
-#                   For Beijing Norm. Univ. soil type data
-#                   - "bnu.v2.30s" for global 30s data
 #
 # vegsoilt_frac - When .true., output the fraction of each
 #                 vegetation and soil type and the dominant