Use a consistent definition of bool

Since _Bool is only ever a keyword and not a macro, and we can't
test for HAVE_STDBOOL_H in the headers, remove the #ifdef for it in
<cdio/types.h> and instead, simply define it as 'int'.  Replace
inclusion of <stdbool.h> with <cdio/types.h> so that a consistent
definition of bool is used.

Signed-off-by: Natalia Portillo <claunia@claunia.com>

lib/driver/FreeBSD/freebsd.h

@@ -25,11 +25,8 @@
 # include "config.h"
 #endif
 
-#ifdef HAVE_STDBOOL_H
-# include <stdbool.h>
-#endif 
-
 #include <cdio/sector.h>
+#include <cdio/types.h>
 #include "cdio_assert.h"
 #include "cdio_private.h"
 

lib/driver/MSWindows/win32.c

@@ -24,13 +24,10 @@
 # include "config.h"
 #endif
 
-#ifdef HAVE_STDBOOL_H
-# include <stdbool.h>
-#endif 
-
 #include <cdio/cdio.h>
 #include <cdio/sector.h>
 #include <cdio/util.h>
+#include <cdio/types.h>
 #include <cdio/mmc.h>
 #include <cdio/logging.h>
 #include "cdio_assert.h"

lib/driver/aix.c

@@ -20,10 +20,6 @@
 # include "config.h"
 #endif
 
-#ifdef HAVE_STDBOOL_H
-# include <stdbool.h>
-#endif 
-
 #ifdef HAVE_STRING_H
 #include <string.h>
 #endif
@@ -31,6 +27,7 @@
 #include <cdio/logging.h>
 #include <cdio/sector.h>
 #include <cdio/util.h>
+#include <cdio/types.h>
 #include <cdio/mmc.h>
 #include "cdio_assert.h"
 #include "cdio_private.h"

lib/driver/netbsd.c

@@ -45,12 +45,9 @@
 # include "config.h"
 #endif
 
-#ifdef HAVE_STDBOOL_H
-# include <stdbool.h>
-#endif 
-
 #include <cdio/sector.h>
 #include <cdio/util.h>
+#include <cdio/types.h>
 #include "cdio_assert.h"
 #include "cdio_private.h"
 

lib/driver/os2.c

@@ -24,13 +24,10 @@
 # include "config.h"
 #endif
 
-#ifdef HAVE_STDBOOL_H
-# include <stdbool.h>
-#endif 
-
 #include <cdio/cdio.h>
 #include <cdio/sector.h>
 #include <cdio/util.h>
+#include <cdio/types.h>
 #include <cdio/mmc.h>
 #include <cdio/logging.h>
 #include "cdio_assert.h"

lib/driver/osx.c

@@ -32,13 +32,10 @@
 # include "config.h"
 #endif
 
-#ifdef HAVE_STDBOOL_H
-# include <stdbool.h>
-#endif 
-
 #include <cdio/logging.h>
 #include <cdio/sector.h>
 #include <cdio/util.h>
+#include <cdio/types.h>
 
 /* For SCSI TR_* enumerations */
 typedef enum {