Ant task - CompileEnvironment is used + "buildToolsTest" verifies <java> output

build-tools/test/hello/5/Hello.kt

@@ -0,0 +1,9 @@
+class Greeter(val name : String) {
+  fun greet() {
+    System.out?.println("Hello, ${name}!");
+  }
+}
+
+fun main(args : Array<String>) {
+  Greeter(args[0]).greet()
+}