patch 9.1.0011: regexp cannot match combining chars in collection

Problem:  regexp cannot match combining chars in collection
Solution: Check for combining characters in regex collections for the
          NFA and BT Regex Engine

Also, while at it, make debug mode work again.

fixes #10286
closes: #12871

Signed-off-by: Christian Brabandt <cb@256bit.org>

src/version.c

@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    11,
 /**/
     10,
 /**/