patch 7.4.1716

Problem:    'autochdir' doesn't work for the first file. (Rob Hoelz)
Solution:   Call DO_AUTOCHDIR after startup. (Christian Brabandt, closes #704)

src/version.c

@@ -748,6 +748,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1716,
 /**/
     1715,
 /**/