Supported simplest cases of SAM adapter.

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

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+package test;
+
+public class Basic {
+    public void foo(Runnable r) {
+    }
+
+    public static void bar(Runnable r) {
+    }
+}

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

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+package test
+
+public open class Basic : java.lang.Object {
+    public constructor Basic()
+    public open /*synthesized*/ fun foo(/*0*/ p0 : (() -> jet.Unit)?) : jet.Unit
+    public open fun foo(/*0*/ p0 : java.lang.Runnable?) : jet.Unit
+}
+
+package Basic {
+    public open /*synthesized*/ fun bar(/*0*/ p0 : (() -> jet.Unit)?) : jet.Unit
+    public open fun bar(/*0*/ p0 : java.lang.Runnable?) : jet.Unit
+}

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

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+package test;
+
+import java.io.FilenameFilter;
+import java.util.Comparator;
+
+public class NonTrivialFunctionType {
+    public void foo(FilenameFilter filenameFilter) {
+    }
+
+    public void foo(Comparator<String> comparator) {
+    }
+}

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

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+package test
+
+public open class NonTrivialFunctionType : java.lang.Object {
+    public constructor NonTrivialFunctionType()
+    public open /*synthesized*/ fun foo(/*0*/ p0 : ((java.io.File?, jet.String?) -> jet.Boolean)?) : jet.Unit
+    public open /*synthesized*/ fun foo(/*0*/ p0 : ((jet.String?, jet.String?) -> jet.Int)?) : jet.Unit
+    public open fun foo(/*0*/ p0 : java.io.FilenameFilter?) : jet.Unit
+    public open fun foo(/*0*/ p0 : java.util.Comparator<jet.String>?) : jet.Unit
+}