Introduced -target and -list_targets flags.

Use it like

    $ konanc hello.kt -target iphone

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

@@ -77,11 +77,13 @@ class K2Native : CLICompiler<K2NativeCompilerArguments>() {
 
             put(EXECUTABLE_FILE, 
                 arguments.outputFile ?: "program.kexe")
-            put(RUNTIME_FILE, 
-                arguments.runtimeFile ?: Distribution.runtime)
-            put(PROPERTY_FILE, 
-                arguments.propertyFile ?: Distribution.propertyFile)
-
+            if (arguments.runtimeFile != null) 
+                put(RUNTIME_FILE, arguments.runtimeFile)
+            if (arguments.propertyFile != null) 
+                put(PROPERTY_FILE, arguments.propertyFile)
+            if (arguments.target != null) 
+                put(TARGET, arguments.target)
+            put(LIST_TARGETS, arguments.listTargets)
             put(OPTIMIZATION, arguments.optimization)
 
             put(PRINT_IR, arguments.printIr)

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

@@ -30,6 +30,13 @@ public class K2NativeCompilerArguments extends CommonCompilerArguments {
     @Argument(value = "opt", description = "Enable optimizations during compilation")
     public boolean optimization;
 
+    @Argument(value = "target", description = "Set hardware target")
+    @ValueDescription("<target>")
+    public String target;
+
+    @Argument(value = "list_targets", description = "List available hardware targets")
+    public boolean listTargets;
+
     @Argument(value = "print_ir", description = "Print IR")
     public boolean printIr;