Use C99 standard bool type instead of locally defined one.

Check for types in configure pass.
Fix a warning related to nfc_reader_select() (a length - uiInitDataLen - was set by NULL instead of 0).

src/types.h

@@ -22,17 +22,13 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define _LIBNFC_TYPES_H_
 
 #include <stdint.h>
+#include <stdbool.h>
 
 #include "defines.h"
 
 // Compiler directive, set struct alignment to 1 byte for compatibility
 #pragma pack(1)
 
-typedef enum {
-  false = 0x00,
-  true  = 0x01
-} bool;
-
 typedef enum {
   CT_PN531                    = 0x10,
   CT_PN532                    = 0x20,