Merge branch 'hotfix-v6.2'

This merge addresses minor issues in the MPAS infrastructure with how character
strings are read from netCDF files via PIO, and it adds the 'recursive'
attribute to the mpas_log_write routine to avoid errors raised by several
newer compilers when critical errors are written.

* hotfix-v6.2:
  Add missing 'recursive' attribute to MPAS_log_write(...) routine
  Increment version number to 6.2
  Remove C null characters from strings read by PIO
  Add new MPAS_sanitize_string routine to mpas_c_interfacing
  Change length of xtime variables to ShortStrKIND to match netCDF files

Author: mgduda

LICENSE

@@ -1,4 +1,4 @@
-Copyright (c) 2013-2018,  Los Alamos National Security, LLC (LANS) (Ocean: LA-CC-13-047;
+Copyright (c) 2013-2019,  Los Alamos National Security, LLC (LANS) (Ocean: LA-CC-13-047;
 Land Ice: LA-CC-13-117) and the University Corporation for Atmospheric Research (UCAR).
 
 All rights reserved. 

README.md

@@ -1,4 +1,4 @@
-MPAS-v6.1
+MPAS-v6.2
 ====
 
 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="6.1">
+<registry model="mpas" core="atmosphere" core_abbrev="atm" version="6.2">
 
 <!-- **************************************************************************************** -->
 <!-- ************************************** Dimensions ************************************** -->

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="6.1">
+<registry model="mpas" core="init_atmosphere" core_abbrev="init_atm" version="6.2">
 
 <!-- **************************************************************************************** -->
 <!-- ************************************** Dimensions ************************************** -->

src/core_landice/Registry.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0"?>
-<registry model="mpas" core="landice" core_abbrev="li" version="6.1">
+<registry model="mpas" core="landice" core_abbrev="li" version="6.2">
 
 
 <!-- ======================================================================= -->

src/core_ocean/Registry.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0"?>
-<registry model="mpas" core="ocean" core_abbrev="ocn" version="6.1">
+<registry model="mpas" core="ocean" core_abbrev="ocn" version="6.2">
 
 	<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="6.1">
+<registry model="mpas" core="seaice" core_abbrev="seaice" version="6.2">
 
 	<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="6.1">
+<registry model="mpas" core="sw" core_abbrev="sw" version="6.2">
 	<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="6.1">
+<registry model="mpas" core="test" core_abbrev="test" version="6.2">
 	<dims>
 		<dim name="nCells"/>
 		<dim name="nEdges"/>

src/framework/mpas_c_interfacing.F

@@ -4,6 +4,37 @@ module mpas_c_interfacing
     contains
 
 
+    !-----------------------------------------------------------------------
+    !  routine mpas_sanitize_string
+    !
+    !> \brief Converts C null characters in a Fortran string to spaces
+    !> \author Michael Duda
+    !> \date   19 February 2019
+    !> \details
+    !>  Converts all C null characters in a Fortran string to spaces.
+    !>  This may be useful for strings that were provided by C code through other
+    !>  Fortran code external to MPAS.
+    !
+    !-----------------------------------------------------------------------
+    subroutine mpas_sanitize_string(str)
+    
+        use iso_c_binding, only : c_null_char
+    
+        implicit none
+    
+        character(len=*), intent(inout) :: str
+    
+        integer :: i
+    
+        do i=1,len(str)
+            if (str(i:i) == c_null_char) then
+                str(i:i) = ' '
+            end if
+        end do
+    
+    end subroutine mpas_sanitize_string
+
+
     !-----------------------------------------------------------------------
     !  routine mpas_c_to_f_string
     !