patch 7.4.1917

Problem:    History lines read from viminfo in different encoding than when
            writing are not converted.
Solution:   Convert the history lines.

src/version.c

@@ -753,6 +753,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1917,
 /**/
     1916,
 /**/