Removes --enable-serial-autoprobe option at compile and replace this feature by LIBNFC_INTRUSIVE_SCAN environment variable at run time.

include/nfc/nfc-types.h

@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2009 Roel Verdult
  * Copyright (C) 2010, 2011 Romain Tartière
- * Copyright (C) 2010, 2011 Romuald Conty
+ * Copyright (C) 2010, 2011, 2012 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
@@ -32,7 +32,10 @@
 #  include <stdbool.h>
 #  include <stdio.h>
 
-typedef void *nfc_context;
+/**
+ * NFC context
+ */
+typedef struct nfc_context nfc_context;
 
 /**
  * NFC device