KT-3553 Problem with propagation for extension functions

#KT-3553 fixed

compiler/testData/loadJava/javaAgainstKotlin/signaturePropagation/InheritExtensionAndNot/Sub.java

@@ -0,0 +1,11 @@
+package test;
+
+import org.jetbrains.jet.jvm.compiler.annotation.ExpectLoadError;
+
+public interface Sub extends Super1, Super2 {
+    @ExpectLoadError("Incompatible super methods: some are extension functions, some are not")
+    void foo(String p);
+
+    @ExpectLoadError("Incompatible super methods: some are extension functions, some are not|Incompatible super methods: some have vararg parameter, some have not")
+    void bar(String... p);
+}

compiler/testData/loadJava/javaAgainstKotlin/signaturePropagation/InheritExtensionAndNot/supers.kt

@@ -0,0 +1,12 @@
+package test
+
+public trait Super1 {
+    public fun String.foo()
+    public fun Array<String>.bar()
+}
+
+public trait Super2 {
+    public fun foo(p: String)
+    public fun bar(vararg p: String)
+}
+