Various fixes for HelloWorld. (#27)

backend.native/cli.bc/src/org/jetbrains/kotlin/cli/bc/K2Native.kt

@@ -50,6 +50,8 @@ class K2Native : CLICompiler<K2NativeCompilerArguments>() {
     configuration.put(CommonConfigurationKeys.MODULE_NAME,
                       JvmAbi.DEFAULT_MODULE_NAME)
     configuration.addKotlinSourceRoots(arguments.freeArgs)
+    // TODO: add to source set, once we know how to not compile them.
+    configuration.addKotlinSourceRoots(arguments.headers.asList())
     val environment = KotlinCoreEnvironment.createForProduction(rootDisposable,
         configuration, Arrays.asList<String>("extensions/common.xml"))
 

backend.native/cli.bc/src/org/jetbrains/kotlin/cli/bc/K2NativeCompilerArguments.java

@@ -14,4 +14,8 @@ public class K2NativeCompilerArguments extends CommonCompilerArguments {
     @ValueDescription("<path>")
     public String runtimeFile;
 
+    @Argument(value = "headers", description = "Header files used for compilation")
+    @ValueDescription("<path>")
+    public String[] headers;
+
 }