patch 8.2.0830: Motif: can't map "!"

Problem:    Motif: can't map "!". (Ben Jackson)
Solution:   Remove the shift modifier if it's already included in the key.
            (closes #6147)
diff --git a/src/version.c b/src/version.c
index f91ff1a..f088e61 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    830,
+/**/
     829,
 /**/
     828,