Support default arguments and varargs for callable references

#KT-8834
 #KT-19869
 #KT-25514

compiler/testData/codegen/box/callableReference/varargAndDefaults/varargWithDefaultValue.kt

@@ -0,0 +1,13 @@
+// !LANGUAGE: +NewInference
+// IGNORE_BACKEND: JS, JS_IR, JVM_IR
+
+fun foo(x: Int, vararg y: String = arrayOf("Aaa")): String =
+        if (y[0].length == x) "OK" else "Fail"
+
+fun use0(f: (Int) -> String): String = f(3)
+fun use1(f: (Int, String) -> String): String = f(5, "Bbbbb")
+
+fun box(): String {
+    if (use0(::foo) != "OK") return "Fail"
+    return use1(::foo)
+}