A warning added: parameter names disagree upon override

This should be an error, but there is an issue with Java interop: Java parameters may change names or not have them.

idea/testData/checker/OverridesAndGenerics.jet

@@ -19,8 +19,8 @@
     }
 
     open class MyClass : MyTrait<Int>, MyAbstractClass<String>() {
-        override fun foo(i: Int) = i
-        override fun bar(s: String) = s
+        override fun foo(t: Int) = t
+        override fun bar(t: String) = t
     }
 
     class <error>MyIllegalGenericClass1</error><T> : MyTrait<T>, MyAbstractClass<T>() {}