test for stuff that Max has already implemented

idea/testData/codegen/newInstanceDefaultConstructor.jet

@@ -0,0 +1,8 @@
+class SimpleClass() {
+    fun foo() = 610
+}
+
+fun test() {
+  val c = new SimpleClass()
+  return c.foo()
+}

idea/testData/codegen/newInstanceExplicitConstructor.jet

@@ -0,0 +1,10 @@
+class SimpleClass {
+    this() {}
+
+    fun foo() = 610
+}
+
+fun test() {
+  val c = new SimpleClass()
+  return c.foo()
+}