Make sure memmove() is defined, even on SunOS 4.1.4.

PR: 963

crypto/aes/aes_cfb.c

@@ -114,6 +114,7 @@
 
 #include <openssl/aes.h>
 #include "aes_locl.h"
+#include "e_os.h"
 
 /* The input and output encrypted as though 128bit cfb mode is being
  * used.  The extra state information to record how much of the

crypto/des/cfb64ede.c

@@ -57,6 +57,7 @@
  */
 
 #include "des_locl.h"
+#include "e_os.h"
 
 /* The input and output encrypted as though 64bit cfb mode is being
  * used.  The extra state information to record how much of the