patch 8.0.1601: highlight test fails on Win32

Problem:    Highlight test fails on Win32.
Solution:   Check for vtp and vcon support.
diff --git a/src/version.c b/src/version.c
index 23b0168..50422aa 100644
--- a/src/version.c
+++ b/src/version.c
@@ -767,6 +767,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1601,
+/**/
     1600,
 /**/
     1599,