Added test for ambiguous SAM adapters within one class.

compiler/testData/diagnostics/tests/j+k/ambiguousSamAdapters.kt

@@ -0,0 +1,18 @@
+// FILE: A.java
+import java.io.Closeable;
+
+public class A {
+    public static void foo(Runnable r) {
+    }
+
+    public static void foo(Closeable c) {
+    }
+}
+
+// FILE: test.kt
+
+fun main() {
+    A.<!OVERLOAD_RESOLUTION_AMBIGUITY!>foo { "Hello!" }<!>
+    A.foo(Runnable { "Hello!" })
+}
+

compiler/testData/loadJava/compiledJava/singleAbstractMethod/adapter/AmbiguousAdapters.java

@@ -0,0 +1,11 @@
+package test;
+
+import java.io.Closeable;
+
+public class AmbiguousAdapters {
+    public void foo(Runnable r) {
+    }
+
+    public void foo(Closeable c) {
+    }
+}

compiler/testData/loadJava/compiledJava/singleAbstractMethod/adapter/AmbiguousAdapters.txt

@@ -0,0 +1,9 @@
+package test
+
+public open class AmbiguousAdapters : java.lang.Object {
+    public constructor AmbiguousAdapters()
+    public open /*synthesized*/ fun foo(/*0*/ p0: (() -> jet.Unit)?): jet.Unit
+    public open /*synthesized*/ fun foo(/*0*/ p0: (() -> jet.Unit)?): jet.Unit
+    public open fun foo(/*0*/ p0: java.io.Closeable?): jet.Unit
+    public open fun foo(/*0*/ p0: java.lang.Runnable?): jet.Unit
+}