#567 Warning on override Hashtable / HashMap put method with super call

[Nick Radov]

http://norvig.com/java-iaq.html#super

Overriding the Hashtable.put(Object, Object) or HashMap.put(Object, Object) method and calling super is likely to lead to unexpected results and intermittent failures when the internal table overflows. We should add a new rule which matches code like in Peter Norvig's example linked above.