Fix building on Windows 7 x64

- tried the fix listed here, and it worked: https://groups.google.com/forum/#!topic/nodejs/onA0S01INtw
- have not proved that it will work everywhere, but it's worth a shot

src/heap_profiler.h

@@ -1,8 +1,8 @@
 #ifndef NODE_HEAP_PROFILER_
 #define NODE_HEAP_PROFILER_
 
-#include <v8-profiler.h>
 #include <node.h>
+#include <v8-profiler.h>
 
 using namespace v8;
 using namespace node;