ISABELLE_PROCESS replaces ISABELLE and ISABELLE_TOOL replaces ISATOOL -- old bindings stay for a while (legacy feature);

--- a/lib/scripts/getsettings	Sat Oct 04 14:43:40 2008 +0200
+++ b/lib/scripts/getsettings	Sat Oct 04 16:05:08 2008 +0200
@@ -19,8 +19,11 @@
 fi
 
 #key executables
-ISABELLE="$ISABELLE_HOME/bin/isabelle-process"
-ISATOOL="$ISABELLE_HOME/bin/isatool"
+ISABELLE_PROCESS="$ISABELLE_HOME/bin/isabelle-process"
+ISABELLE_TOOL="$ISABELLE_HOME/bin/isatool"
+#legacy settings
+ISABELLE="$ISABELLE_PROCESS"
+ISATOOL="$ISABELLE_TOOL"
 
 #Isabelle distribution identifier -- filled in automatically!
 ISABELLE_IDENTIFIER=""