patch 8.1.1122: char2nr() does not handle composing characters

Problem:    char2nr() does not handle composing characters.
Solution:   Add str2list() and list2str(). (Ozaki Kiichi, closes #4190)
diff --git a/src/version.c b/src/version.c
index 1563e63..46b3b5d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -772,6 +772,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1122,
+/**/
     1121,
 /**/
     1120,