Merge branch 'release-v4.5'

This merge finalizes the v4.5 release by adding changes from the 'release-v4.5'
branch onto the 'master' branch.

* release-v4.5:
  no need to write GEOPT and SPECHUMD in intermediate file
  Update version number to 4.5
  removal of unnecessary comment in Vtable.ICONm
  add short description about ICON Vtables to README
  add Vtable for ICON for model and pressure levels
  add support for level code 150 (e. g. for ICON-EU data) and automatic detection of the model
  add necessary field names to METGRID.TBL.ARW for ICON-EU
  modify rrpr.F to convert ICON soil moisture from kg m-2 to m3 m-3
  With the merge of PR #216, I think it should now be possible to remove the intermediate name that was less than 9 characters
  Use all 9 characters of namvar when printing field inventory in output() routine
  Increase idlen from 8 to 9 in new_storage.F to support nine-character names
  add global LCZ entry to GEOGRID.TBL
  Add -h/--help options to the 'configure' script
  Improve the calculation of rotation angle at sub-km grid scales
  Adds GFS total column ozone field to metgrid table and creates new Vtable with GFS ozone field.
  Adding entries for MAD-WRF

README

@@ -1,4 +1,4 @@
-WRF Pre-Processing System Version 4.4
+WRF Pre-Processing System Version 4.5
 
 http://www2.mmm.ucar.edu/wrf/users/
 

compile

@@ -112,7 +112,7 @@ endif
 # Print out WPS version, system info, and compiler/version
 echo "============================================================================================== "
   echo " "
-  echo Version 4.4
+  echo Version 4.5
   echo " "
   uname -a
   echo " "

configure

@@ -1,5 +1,24 @@
 #!/bin/sh
 
+print_help()
+{
+  echo 'Usage: configure [options]'
+  echo ''
+  echo 'where options may be any of the following:'
+  echo ''
+  echo ' --nowrf             Disables checks to find the path to the compiled WRF model.'
+  echo '                     This enables some WPS programs to be compiled without'
+  echo '                     requiring WRF to have been compiled, but it will preclude'
+  echo '                     the compilation of WPS programs that depend on the WRF I/O'
+  echo '                     API (geogrid, metgrid, and int2nc).'
+  echo ''
+  echo ' --build-grib2-libs  Compiles zlib, libpng, and JasPer libraries from source in'
+  echo '                     the external/ directory, and installs the libraries in'
+  echo '                     grib2/.'
+  echo ''
+  echo ' -h/--help           Print this help message and quit.'
+}
+
 #
 # Check for command-line arguments
 # At present, the only supported arguments are:
@@ -15,6 +34,9 @@ for arg in $@; do
     nowrf=1
   elif [ "${arg}" = "--build-grib2-libs" ]; then
     build_grib2=1
+  elif [ "${arg}" = "--help" ] || [ "${arg}" = "-h" ]; then
+    print_help
+    exit
   else
     printf "Unrecognized option %s\n" ${arg}
   fi