patch 9.0.0806: 'langmap' works differently when there are modifiers

Problem:    'langmap' works differently when there are modifiers.
Solution:   Only apply 'langmap' to a character where modifiers have no
            effect. (closes #11395, closes #11404)
diff --git a/src/version.c b/src/version.c
index 7f72a2c..3d1feae 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    806,
+/**/
     805,
 /**/
     804,