Moves Windows conditional code to dedicated files

contrib/win32/unistd.h

@@ -1,7 +1,7 @@
 /*-
  * Public platform independent Near Field Communication (NFC) library
  *
- * Copyright (C) 2011, 2012 Romuald Conty
+ * Copyright (C) 2011, 2012, 2013 Romuald Conty
  *
  * This program is free software: you can redistribute it and/or modify it
  * under the terms of the GNU Lesser General Public License as published by the
@@ -31,5 +31,11 @@
 #  include <winbase.h>
 #  define sleep(X) Sleep( X * 1000)
 
+// With MinGW, getopt(3) is provided as separate header
+#if defined(WIN32) && defined(__GNUC__) /* mingw compiler */
+ #include <getopt.h>
+#endif
+
+
 #endif /* _UNISTD_H_ */
 

utils/nfc-read-forum-tag3.c

@@ -55,10 +55,6 @@
 
 #include "nfc-utils.h"
 
-#if defined(WIN32) && defined(__GNUC__) /* mingw compiler */
- #include <getopt.h>
-#endif
-
 static nfc_device *pnd;
 
 static void