Rename fletch -> dartino

src/shared/platform_macos.cc

 // 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.
 
-#if defined(FLETCH_TARGET_OS_MACOS)
+#if defined(DARTINO_TARGET_OS_MACOS)
 
 #include <mach-o/dyld.h>
 
 #include <CoreFoundation/CFTimeZone.h>
 
 #include "src/shared/assert.h"
 #include "src/shared/platform.h"
 
-namespace fletch {
+namespace dartino {
 
 void GetPathOfExecutable(char* path, size_t path_length) {
   uint32_t bytes_copied = path_length;
   if (_NSGetExecutablePath(path, &bytes_copied) != 0) {
     FATAL1("_NSGetExecutablePath failed, %u bytes left.", bytes_copied);
   }
 }
 
 int Platform::GetLocalTimeZoneOffset() {
   CFTimeZoneRef tz = CFTimeZoneCopySystem();
   // Even if the offset was 24 hours it would still easily fit into 32 bits.
   int offset = CFTimeZoneGetSecondsFromGMT(tz, CFAbsoluteTimeGetCurrent());
   CFRelease(tz);
   // Note that Unix and Dart disagree on the sign.
   return static_cast<int>(-offset);
 }
 
-}  // namespace fletch
+}  // namespace dartino
 
-#endif  // defined(FLETCH_TARGET_OS_MACOS)
+#endif  // defined(DARTINO_TARGET_OS_MACOS)