Add initial tests for Kernel interpreter

pkg/kernel/testcases/interpreter/print_test.dart

Index: pkg/kernel/testcases/interpreter/print_test.dart
diff --git a/pkg/kernel/testcases/interpreter/print_test.dart b/pkg/kernel/testcases/interpreter/print_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..a74d8ee8ac3e09c9a30fa88d3e24ca6a02e54062
--- /dev/null
+++ b/pkg/kernel/testcases/interpreter/print_test.dart
@@ -0,0 +1,15 @@
+// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+/// Prints different basic literals.
+///
+/// The log of this test is used to verify print is evaluated with the correct
+/// arguments.
+main() {
+  print('hello');
+  print(1);
+  print(true);
+  print(4.2);
+  print(null);
+}