patch 9.0.0850: MS-Windows Terminal has unstable color control

Problem:    MS-Windows Terminal has unstable color control.
Solution:   Do not try to read the old command prompt colortable, use modern
            VT sequences. (Christopher Plewright, closes #11450,
            closes #11373)

src/version.c

@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    850,
 /**/
     849,
 /**/