Fix implicit declaration of functions.
--- acinclude.m4.orig	2009-07-04 05:04:08.000000000 -0500
+++ acinclude.m4	2021-03-10 02:28:47.000000000 -0600
@@ -327,6 +327,8 @@
             # include <unistd.h>
             #endif
             #include <stdio.h>
+            #include <stdlib.h>
+            #include <time.h>
             #include <aio.h>
             ]],[[
                     struct aiocb    a;
--- blockmode.c.orig	2009-06-17 06:05:53.000000000 -0500
+++ blockmode.c	2021-03-10 02:33:25.000000000 -0600
@@ -30,6 +30,7 @@
 #endif
 
 #include "beecrypt/blockmode.h"
+#include "beecrypt/endianness.h"
 
 int blockEncryptECB(const blockCipher* bc, blockCipherParam* bp, uint32_t* dst, const uint32_t* src, unsigned int nblocks)
 {