New default checks for mixed hierarchies

Old and new schemes

compiler/testData/compileKotlinAgainstCustomBinaries/jvmDefaultClashWithOld/source.kt

@@ -0,0 +1,15 @@
+import base.*
+
+interface SubCheck : Check {
+    override fun test(): String {
+        return "OK"
+    }
+
+    override var test: String
+        get() = "OK"
+        set(value) {
+            value.length
+        }
+}
+
+class SubCheckClass : CheckClass(), SubCheck