Supported SAM constructor calls without function literal.

compiler/testData/codegen/box/sam/nonLiteralComparator.kt

@@ -0,0 +1,9 @@
+import java.util.*
+
+fun box(): String {
+    val list = ArrayList(Arrays.asList(3, 2, 4, 8, 1, 5))
+    val expected = ArrayList(Arrays.asList(8, 5, 4, 3, 2, 1))
+    val comparatorFun: (Int, Int) -> Int = { a, b -> b - a }
+    Collections.sort(list, Comparator(comparatorFun))
+    return if (list == expected) "OK" else list.toString()
+}

compiler/testData/codegen/box/sam/nonLiteralFilenameFilter.kt

@@ -0,0 +1,10 @@
+import java.io.*
+
+fun box(): String {
+    val f : (File?, String?) -> Boolean = { dir, name -> if (name == null) false else (name as java.lang.String).endsWith(".md") }
+    val filter = FilenameFilter(f)
+    val listFiles = File(".").listFiles(filter)!!
+    if (listFiles.size != 1) return "Wrong size: $listFiles.size"
+    val name = listFiles[0].getName()
+    return if (name == "ReadMe.md") "OK" else "Wrong name: $name"
+}

compiler/testData/codegen/box/sam/nonLiteralRunnable.kt

@@ -0,0 +1,7 @@
+fun box(): String {
+    var result = "FAIL"
+    val f = { result = "OK" }
+    val r = Runnable(f)
+    r.run()
+    return result
+}

compiler/testData/codegen/box/sam/nonTrivialRunnable.kt

@@ -0,0 +1,11 @@
+var result = "FAIL"
+
+fun getFun(): () -> Unit {
+    return { result = "OK" }
+}
+
+fun box(): String {
+    val r = Runnable(getFun())
+    r.run()
+    return result
+}