Merge branch 'hotfix-v7.3'

This merge addresses an issue in MPAS-Atmosphere when obtaining physics lookup
tables from the MPAS-Data repository at build time.

On 15 March 2022, GitHub removed support for the unencrypted Git protocol (i.e.,
for obtaining repositories with URLs beginning with git://), resulting in the
following error message during during the MPAS-Atmosphere build:

  *** Trying git to obtain WRF physics tables ***
  Cloning into 'MPAS-Data'...
  fatal: remote error:
    The unauthenticated git protocol on port 9418 is no longer supported.
  Please see https://github.blog/2021-09-01-improving-git-protocol-security-github/ for more information.

This is remedied by simply switching from the unencrypted Git protocol to HTTPS
when cloning the MPAS-Data repository.

README.md

@@ -1,4 +1,4 @@
-MPAS-v7.2
+MPAS-v7.3
 ====
 
 The Model for Prediction Across Scales (MPAS) is a collaborative project for

src/core_atmosphere/Registry.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0"?>
-<registry model="mpas" core="atmosphere" core_abbrev="atm" version="7.2">
+<registry model="mpas" core="atmosphere" core_abbrev="atm" version="7.3">
 
 <!-- **************************************************************************************** -->
 <!-- ************************************** Dimensions ************************************** -->

src/core_atmosphere/physics/checkout_data_files.sh

@@ -73,7 +73,7 @@ fi
 which git
 if [ $? -eq 0 ]; then
    echo "*** Trying git to obtain WRF physics tables ***"
-   git clone git://github.com/${github_org}/MPAS-Data.git
+   git clone https://github.com/${github_org}/MPAS-Data.git
    if [ $? -eq 0 ]; then
       cd MPAS-Data
       git checkout v${mpas_vers}

src/core_init_atmosphere/Registry.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0"?>
-<registry model="mpas" core="init_atmosphere" core_abbrev="init_atm" version="7.2">
+<registry model="mpas" core="init_atmosphere" core_abbrev="init_atm" version="7.3">
 
 <!-- **************************************************************************************** -->
 <!-- ************************************** Dimensions ************************************** -->

src/core_landice/Registry.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0"?>
-<registry model="mpas" core="landice" core_abbrev="li" version="7.2">
+<registry model="mpas" core="landice" core_abbrev="li" version="7.3">
 
 
 <!-- ======================================================================= -->

src/core_ocean/Registry.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0"?>
-<registry model="mpas" core="ocean" core_abbrev="ocn" version="7.2">
+<registry model="mpas" core="ocean" core_abbrev="ocn" version="7.3">
 
 	<dims>
 		<dim name="nCells" units="unitless"

src/core_seaice/Registry.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0"?>
-<registry model="mpas" core="seaice" core_abbrev="seaice" version="7.2">
+<registry model="mpas" core="seaice" core_abbrev="seaice" version="7.3">
 
 	<dims>
 		<dim name="nCells"

src/core_sw/Registry.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0"?>
-<registry model="mpas" core="sw" core_abbrev="sw" version="7.2">
+<registry model="mpas" core="sw" core_abbrev="sw" version="7.3">
 	<dims>
 		<dim name="nCells"/>
 		<dim name="nEdges"/>

src/core_test/Registry.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0"?>
-<registry model="mpas" core="test" core_abbrev="test" version="7.2">
+<registry model="mpas" core="test" core_abbrev="test" version="7.3">
 	<dims>
 		<dim name="nCells"/>
 		<dim name="nEdges"/>