Fix d8 build error when V8_SHARED is unset on Linux.

src/d8.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 50 matching lines @@
 #ifndef V8_SHARED
 #include "api.h"
 #include "checks.h"
 #include "d8-debug.h"
 #include "debug.h"
 #include "natives.h"
 #include "platform.h"
 #include "v8.h"
 #endif  // V8_SHARED
 
-#if V8_OS_UNIX
+#if !defined(_WIN32) && !defined(_WIN64)

[Sven Panne, 2013/07/29 11:05:39]

I don't think this is actually correct for compilation under cygwin with
-mno-cygwin, but we probably have several other buggy places like this. I'll try
to find my cheat sheet with preprocessor defines...

 #include <unistd.h>  // NOLINT
 #endif
 
 #ifndef ASSERT
 #define ASSERT(condition) assert(condition)
 #endif
 
 namespace v8 {
 
 
@@ skipping 1565 matching lines @@
 }
 
 }  // namespace v8
 
 
 #ifndef GOOGLE3
 int main(int argc, char* argv[]) {
   return v8::Shell::Main(argc, argv);
 }
 #endif