o include and use stdbool.h if available, otherwise define a bool type.

   (macros.h)
 o Include macros.h in slurm_protocol_defs.h

src/common/macros.h

@@ -13,12 +13,18 @@
 #  include <stddef.h>	/* for NULL */
 #endif 
 
+#if HAVE_STDBOOL_H
+#  include <stdbool.h>
+#else
+typedef enum {false, true} bool;
+#endif /* !HAVE_STDBOOL_H */
+
 #ifndef FALSE
-#define FALSE	(0)
+#define FALSE	false
 #endif
 
 #ifndef TRUE
-#define TRUE	(!FALSE)
+#define TRUE	true
 #endif
 
 /* 

src/common/slurm_protocol_defs.h

@@ -14,11 +14,9 @@
 #  include <inttypes.h>
 #endif  /*  HAVE_CONFIG_H */
 
-/* true, false */
-#define true -1
-#define false 0
 #define NO_VAL	     0x7f7f7f7f
 
+#include <src/common/macros.h>
 #include <src/common/slurm_protocol_common.h>
 
 /* SLURM Message types */