patch 7.4.1611
Problem:    The versplit feature makes the code uneccessary complicated.
Solution:   Remove FEAT_VERTSPLIT, always support vertical splits when
            FEAT_WINDOWS is defined.
diff --git a/src/version.c b/src/version.c
index 8178342..0803de4 100644
--- a/src/version.c
+++ b/src/version.c
@@ -646,7 +646,7 @@
 #else
 	"-user_commands",
 #endif
-#ifdef FEAT_VERTSPLIT
+#ifdef FEAT_WINDOWS
 	"+vertsplit",
 #else
 	"-vertsplit",
@@ -749,6 +749,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1611,
+/**/
     1610,
 /**/
     1609,