Fix CoCo build. Improve CMOC bool portability.

Author: EricCarrGH

coco/src/fn_fuji/fuji_error.c

@@ -4,7 +4,7 @@
 #include <dw.h>
 #include <fujinet-fuji-coco.h>
 
-bool fuji_error()
+bool fuji_error(void)
 {
     return bus_error(OP_FUJI) == BUS_SUCCESS;
 }

coco/src/fn_fuji/fuji_set_device_filename.c

@@ -26,5 +26,5 @@ bool fuji_set_device_filename(uint8_t mode, uint8_t hs, uint8_t ds, char *buffer
     bus_ready();
     dwwrite((uint8_t *)&sdf, sizeof(sdf));
 
-    return fuji_error(OP_FUJI) == BUS_SUCCESS;
+    return fuji_error() == BUS_SUCCESS;
 }

fujinet-fuji.h

@@ -6,10 +6,17 @@
 // In general, bools return the "success" status, so true is good, false is bad.
 
 #ifdef _CMOC_VERSION_
-    #include <cmoc.h>
+#include <cmoc.h>
+
+// Implement <stdbool.h> for CMOC. 
+// Follow the standard "ifndef _STDBOOL_H" check in case the project already does this.
+#ifndef _STDBOOL_H
+#define _STDBOOL_H
 typedef unsigned char bool;
-    #define true  1
-    #define false 0
+#define true  1
+#define false 0
+#endif
+
 #else
     #include <stddef.h>
     #include <stdbool.h>
@@ -43,7 +50,7 @@ typedef unsigned char bool;
 #ifdef __CBM__
     #define MAX_PASSWORD_LEN 65
 #else
-    #define MAX_PASSWORD_LEN 64
+#define MAX_PASSWORD_LEN 64
 #endif
 
 #define FUJICMD_RESET                      0xFF