Update general UPP for GTG4 (#762)

* Add GEFS WAFS control file

* 1. Change gtg_algo() interface in MDLFLD.f
2. Add CIT(:,:,:) array for In-Cloud Turbulence, ALLOCATE_ALL.f VRBLS3D_mod.f DEALLOCATE.f
3. Modify CMakeLists.txt for updated/new GTG source code files.
4. Add stub code for the new GTG source files in general UPP
5. Modify interpolation in MISCLN.f for RRFS GTG
6. Modify jobs/J_NCEPPOST to run WAFS downstream only
   Add scripts/exwafs_atmos_nceppost.sh
   Add ush/wafs_nceppost.sh

* 1. Add updates to the log/history of the related Fortran source code
2. Add gtg_on to POSTGPVARS in scripts/exwafs_atmos_nceppost.sh,
   and add gtg_on to namelist 'nampgb' in WRFPOST.f

* update gtg code revision

* Remove one duplicate line of comment

* Fix bug of GTG interpolations in MDL2P.f
Remove WAFS fields on ICAO standard atmospheric levels from post_avblflds.xml
And remove MDL2STD_P.f which does interpolation on ICAO standard atmospheric levels

* Fix a bug by initializing "gtg_interpolation = .false." in MDL2P.f

* Remove comments and a variable related to MDL2STD_P
Piggyback changes of parm/makefile for cleaning out GEFS anal control file generation

* Remove GTG related parm files. Instead, scripts will copy the parm file from
sorc/ncep_post.fd/post_gtg.fd

---------

Co-authored-by: yali mao <[email protected]>
Co-authored-by: yali mao <[email protected]>
Co-authored-by: yali mao <[email protected]>
Co-authored-by: yali mao <[email protected]>
Co-authored-by: yali mao <[email protected]>
Co-authored-by: yali mao <[email protected]>
Co-authored-by: yali mao <[email protected]>
Co-authored-by: yali mao <[email protected]>

jobs/J_NCEPPOST

@@ -147,7 +147,11 @@ env
 #########################################################
 # Execute the Script
 #########################################################
-$SCRgfs/ex${RUN}_atmos_nceppost.sh
+if [ $WAFSF = "YES" ] ; then
+    $SCRgfs/exwafs_atmos_nceppost.sh
+else
+    $SCRgfs/ex${RUN}_atmos_nceppost.sh
+fi
 
 ##############################
 # Remove the Temporary working directory