patch 8.0.1463: test fails without 'autochdir' option

Problem:    Test fails without 'autochdir' option.
Solution:   Skip test if 'autochdir' is not supported.

Author: brammool

src/testdir/test_autocmd.vim

@@ -1232,6 +1232,9 @@ function Test_dirchanged_local()
 endfunc
 
 function Test_dirchanged_auto()
+  if !exists('+autochdir')
+    return
+  endif
   call s:Before_test_dirchanged()
   call test_autochdir()
   autocmd test_dirchanged DirChanged auto call add(s:li, "auto:")

src/version.c

@@ -771,6 +771,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1463,
 /**/
     1462,
 /**/