Minor change in implementation of 'equals': check for (x instance Foo) before the call to super.equals.
Not sure what would be the impact on performance, however this reduce the risk of errors.


git-svn-id: https://svn.apache.org/repos/asf/sis/branches/JDK7@1543219 13f79535-47bb-0310-9956-ffa450edef68