etc/settings

--- a/etc/settings	Tue Jan 18 11:42:11 2011 +0100
+++ b/etc/settings	Tue Jan 18 21:29:56 2011 +0100
@@ -56,6 +56,8 @@
 
 if [ -n "$JAVA_HOME" ]; then
   ISABELLE_JAVA="$JAVA_HOME/bin/java"
+elif [ -x /usr/libexec/java_home ]; then
+  ISABELLE_JAVA="$(/usr/libexec/java_home -v 1.6)"/bin/java
 else
   ISABELLE_JAVA="java"
 fi