patch 7.4.2069

Problem:    spell.c is too big.
Solution:   Split it in spell file handling and spell checking.

src/version.c

@@ -758,6 +758,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2069,
 /**/
     2068,
 /**/