Tidy the tidy script

contrib/tidy_datadir.sh

@@ -1,10 +1,13 @@
 #!/bin/bash
+# Copyright (c) 2018-2020 The Hush developers
+# Distributed under the GPLv3 software license, see the accompanying
+# file COPYING or https://www.gnu.org/licenses/gpl-3.0.en.html
 
 if [ -d "$1" ]; then
   cd "$1"
 else
   echo "Usage: $0 <datadir>" >&2
-  echo "Removes obsolete Bitcoin database files" >&2
+  echo "Removes obsolete Hush database files" >&2
   exit 1
 fi
 
@@ -16,22 +19,22 @@ if [ -f wallet.dat -a -f peers.dat -a -f chainstate/CURRENT -a -f blocks/index/C
 
 case $LEVEL in
   0)
-    echo "Error: no Bitcoin datadir detected."
+    echo "Error: no Hush datadir detected."
     exit 1
     ;;
   1)
-    echo "Detected old Bitcoin datadir (before 0.7)."
+    echo "Detected old Hush datadir (before 0.7)."
     echo "Nothing to do."
     exit 0
     ;;
   2)
-    echo "Detected Bitcoin 0.7 datadir."
+    echo "Detected Hush 0.7 datadir."
     ;;
   3)
-    echo "Detected Bitcoin pre-0.8 datadir."
+    echo "Detected Hush pre-0.8 datadir."
     ;;
   4)
-    echo "Detected Bitcoin 0.8 datadir."
+    echo "Detected Hush 0.8 datadir."
     ;;
 esac