patch for VX-Manager (vxclone)

diff -up ./libvxmngr/vx7com.c.orig ./libvxmngr/vx7com.c
--- ./libvxmngr/vx7com.c.orig	2013-09-15 15:40:12.000000000 -0700
+++ ./libvxmngr/vx7com.c	2013-09-15 15:43:13.000000000 -0700
@@ -35,6 +35,7 @@
 #include <errno.h>
 #include <unistd.h>
 #include <fcntl.h>
+#include <sys/types.h>
 #include <sys/stat.h>

 struct termios tio_restore;
diff -up ./libvxmngr/vx7sum.c.orig ./libvxmngr/vx7sum.c
--- ./libvxmngr/vx7sum.c.orig	2013-09-15 15:48:06.000000000 -0700
+++ ./libvxmngr/vx7sum.c	2013-09-15 16:00:04.000000000 -0700
@@ -79,11 +79,11 @@ int vx7_check_sum (const char *buf)
 /* insert new check sum*/
 int vx7_insert_sum (char *buf)
 {
-  (unsigned char) buf[VX7_ChkSum1_ADR] =
+  buf[VX7_ChkSum1_ADR] =
     vx7_sum_up (buf,VX7_ChkSum1_SRT,VX7_ChkSum1_ADR-1) & 0xff;
-  (unsigned char) buf[VX7_ChkSum2_ADR] =
+  buf[VX7_ChkSum2_ADR] =
     vx7_sum_up (buf,VX7_ChkSum2_SRT,VX7_ChkSum2_ADR-1) & 0xff;
-  (unsigned char) buf[VX7_ChkSum3_ADR] =
+  buf[VX7_ChkSum3_ADR] =
     vx7_sum_up (buf,VX7_ChkSum3_SRT,VX7_ChkSum3_ADR-1) & 0xff;
   return (unsigned char) buf[VX7_ChkSum3_ADR];
 }