Rename fletch -> dartino

pkg/lk/lib/framebuffer.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.
 
-import 'dart:fletch.ffi';
+import 'dart:dartino.ffi';
 import 'dart:math';
 
 class FrameBuffer {
   final ForeignPointer _surface;
 
   static ForeignFunction _getFrameBuffer = ForeignLibrary.main.lookup('gfx_create');
   static ForeignFunction _getWidth = ForeignLibrary.main.lookup('gfx_width');
   static ForeignFunction _getHeight = ForeignLibrary.main.lookup('gfx_height');
   static ForeignFunction _clear = ForeignLibrary.main.lookup('gfx_clear');
   static ForeignFunction _flush = ForeignLibrary.main.lookup('gfx_flush');
@@ skipping 42 matching lines @@
         if (x >= dyabs) {
           x -= dyabs;
           px += dxsign;
         }
         py += dysign;
         drawPixel(px, py, color);
       }
     }
   }
 }