updated for version 7.3.734

Problem:    Cannot put help files in a sub-directory.
Solution:   Make :helptags work for sub-directories. (Charles Campbell)

src/version.c

@@ -725,6 +725,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    734,
 /**/
     733,
 /**/