updated for version 7.3.767

Problem:    (Win32) The _errno used for iconv may be the wrong one.
Solution:   Use the _errno from iconv.dll. (Ken Takata)

src/version.c

@@ -725,6 +725,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    767,
 /**/
     766,
 /**/