vm, kernel, top: report memory usage of vm, kernel

include/minix/param.h

@@ -40,6 +40,8 @@ typedef struct kinfo {
         int nr_tasks;           /* number of kernel tasks */
         char release[6];        /* kernel release number */
         char version[6];        /* kernel version number */
+	int vm_allocated_bytes; /* allocated by kernel to load vm */
+	int kernel_allocated_bytes;	/* used by kernel */
 } kinfo_t;
 
 #endif