KT-3553 Problem with propagation for extension functions

#KT-3553 fixed

compiler/testData/loadJava/javaAgainstKotlin/signaturePropagation/InheritExtensionAndNot.txt

@@ -0,0 +1,18 @@
+package test
+
+public trait Sub : test.Super1, test.Super2 {
+    public abstract override /*1*/ fun bar(/*0*/ vararg p: jet.String /*jet.Array<jet.String>*/): jet.Unit
+    public abstract override /*1*/ fun foo(/*0*/ p: jet.String): jet.Unit
+    public abstract override /*1*/ /*fake_override*/ fun jet.Array<jet.String>.bar(): jet.Unit
+    public abstract override /*1*/ /*fake_override*/ fun jet.String.foo(): jet.Unit
+}
+
+public trait Super1 {
+    public abstract fun jet.Array<jet.String>.bar(): jet.Unit
+    public abstract fun jet.String.foo(): jet.Unit
+}
+
+public trait Super2 {
+    public abstract fun bar(/*0*/ vararg p: jet.String /*jet.Array<jet.String>*/): jet.Unit
+    public abstract fun foo(/*0*/ p: jet.String): jet.Unit
+}

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)
+}
+

compiler/testData/loadJava/javaAgainstKotlin/signaturePropagation/InheritExtensionFunction.txt

@@ -0,0 +1,13 @@
+package test
+
+public open class Sub : test.Super {
+    public constructor Sub()
+    public open override /*1*/ fun jet.String.bar(/*0*/ param: jet.String): jet.String
+    public final override /*1*/ /*fake_override*/ fun jet.String.foo(): jet.Unit
+}
+
+public open class Super {
+    public constructor Super()
+    public abstract fun jet.String.bar(/*0*/ p: jet.String): jet.Unit
+    public final fun jet.String.foo(): jet.Unit
+}

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

@@ -0,0 +1,6 @@
+package test;
+
+public class Sub extends Super {
+    public String bar(String recv, String param) {
+    }
+}

compiler/testData/loadJava/javaAgainstKotlin/signaturePropagation/InheritExtensionFunction/Super.kt

@@ -0,0 +1,6 @@
+package test
+
+public open class Super {
+    public fun String.foo() = Unit.VALUE
+    public abstract fun String.bar(p: String)
+}