ENH: tutorials/Alltest -backup option

- for repeated tests (eg, during bisection) can be used to preserve
  the existing directory as tutorialsTest.bak01,
  tutorialsTest.bak02, ... (max of 10).

- preserve the commit information as tutorialsTest/commit-info
  to help document the current or backup test results.

bin/tools/LogFunctions

@@ -5,7 +5,7 @@
 #   \\  /    A nd           | www.openfoam.com
 #    \\/     M anipulation  |
 #------------------------------------------------------------------------------
-#     Copyright (C) 2017-2021 OpenCFD Ltd.
+#     Copyright (C) 2017-2022 OpenCFD Ltd.
 #------------------------------------------------------------------------------
 # License
 #     This file is part of OpenFOAM, distributed under GPL-3.0-or-later.
@@ -25,7 +25,7 @@
 # Extracts useful info from log file.
 logReport()
 {
-    local logfile=$1
+    local logfile="$1"
 
     # logfile is path/to/case/log.application
     caseName=$(dirname $logfile | sed -e 's/\(.*\)\.\///g')
@@ -77,6 +77,7 @@ collectLogs()
 
     local appDir log logFiles
 
+    echo "====" > testLoopReport
     for appDir in *
     do
         [ -d $appDir ] || continue
@@ -99,14 +100,15 @@ collectLogs()
             logReport $log
         done
         echo
-    done > testLoopReport
-    echo "===="
+    done >> testLoopReport
+    echo "====" >> testLoopReport
+    echo "====" 1>&2
 }
 
 
 removeLogs()
 {
-    echo "Removing backup files"
+    echo "Removing backup files" 1>&2
 
     find . \(   \
         -name '*~' -o -name '*.bak'         \