Rename fletch -> dartino

lib/os/event_handler.dart

 // Copyright (c) 2015, the Dartino 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.md file.
 
-part of dart.fletch.os;
+part of dart.dartino.os;
 
 // The event source is ready for reading.
 const int READ_EVENT        = 1 << 0;
 // The event source is ready for writing.
 const int WRITE_EVENT       = 1 << 1;
 // The event source has been closed.
 const int CLOSE_EVENT       = 1 << 2;
 // The event source signaled an error.
 const int ERROR_EVENT       = 1 << 3;
 
@@ skipping 20 matching lines @@
    *
    * An [ArgumentError] is thrown if the event source is not supported.
    * A [StateError] is thrown if the port could not be registered.
    */
   void registerPortForNextEvent(Object id, Port port, int mask) {
     if (port is! Port) throw new ArgumentError(port);
     if (mask is! int) throw new ArgumentError(mask);
     _eventHandlerAdd(id, port, mask);
   }
 
-  @fletch.native static void _eventHandlerAdd(Object id, Port port,
+  @dartino.native static void _eventHandlerAdd(Object id, Port port,
       int event_kinds) {
-    switch (fletch.nativeError) {
-      case fletch.wrongArgumentType:
+    switch (dartino.nativeError) {
+      case dartino.wrongArgumentType:
         // We check the other arguments in [registerPortForNextEvent], so it
         // must be the id that is wrong.
         throw new ArgumentError(id);
-      case fletch.indexOutOfBounds:
+      case dartino.indexOutOfBounds:
         // We get index out of bounds when we could not register the port.
         throw new StateError("The port could not be registered.");
-      case fletch.illegalState:
+      case dartino.illegalState:
         // We get an illegal state when the flags were not supported.
         throw new StateError("Operation not supported.");
       default:
-        throw fletch.nativeError;
+        throw dartino.nativeError;
     }
   }
 }
 
 final EventHandler eventHandler = new EventHandler._internal();