Introduce runtime/platform directory for code shared between vm

runtime/bin/gen_snapshot.cc

 // Copyright (c) 2011, the Dart 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 file.
 
 // Generate a snapshot file after loading all the scripts specified on the
 // command line.
 
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
 
 #include "include/dart_api.h"
 
 #include "bin/builtin.h"
 #include "bin/dartutils.h"
 #include "bin/file.h"
-#include "bin/globals.h"
+
+#include "platform/globals.h"
 
 // Global state that indicates whether a snapshot is to be created and
 // if so which file to write the snapshot into.
 static const char* snapshot_filename = NULL;
 
 
 // Global state which contains a pointer to the script name for which
 // a snapshot needs to be created (NULL would result in the creation
 // of a generic snapshot that contains only the corelibs).
 static char* app_script_name = NULL;
@@ skipping 239 matching lines @@
     exit(255);
   }
   // Now write the snapshot out to specified file and exit.
   WriteSnapshotFile(buffer, size);
   Dart_ExitScope();
 
   // Shutdown the isolate.
   Dart_ShutdownIsolate();
   return 0;
 }