updated for version 7.4.017

Problem:    ":help !!" does not find the "!!" tag in the help file. (Ben
            Fritz)
Solution:   When reading the start of the tags file do parse lines that are
            not header lines.

src/version.c

@@ -738,6 +738,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    17,
 /**/
     16,
 /**/