Use limits.h in Mini-OS for UINT_MAX, INT_MAX, and CHAR_BITS.

Signed-off-by: "John D. Ramsdell" <ramsdell@xxxxxxxxx>
diff -ur oxen-unstable/extras/mini-os/include/types.h xen-unstable/extras/mini-os/include/types.h
--- oxen-unstable/extras/mini-os/include/types.h	2006-08-01 01:08:35.000000000 -0400
+++ xen-unstable/extras/mini-os/include/types.h	2006-08-01 13:35:59.000000000 -0400
@@ -67,6 +67,5 @@
 typedef s64 int64_t;
 
 
-#define INT_MAX         ((int)(~0U>>1))
-#define UINT_MAX            (~0U)
+#include <limits.h>
 #endif /* _TYPES_H_ */
diff -ur oxen-unstable/extras/mini-os/lib/math.c xen-unstable/extras/mini-os/lib/math.c
--- oxen-unstable/extras/mini-os/lib/math.c	2006-08-01 01:08:35.000000000 -0400
+++ xen-unstable/extras/mini-os/lib/math.c	2006-08-01 13:39:55.000000000 -0400
@@ -81,7 +81,6 @@
  * These are used for shifting, and also below for halfword extraction
  * and assembly.
  */
-#define CHAR_BIT        8               /* number of bits in a char */
 #define QUAD_BITS       (sizeof(s64) * CHAR_BIT)
 #define LONG_BITS       (sizeof(long) * CHAR_BIT)
 #define HALF_BITS       (sizeof(long) * CHAR_BIT / 2)