Add note/reminder about dialog(1) regression in HEAD/10.0-C so that we don't

forget about it in the multi-month run of things to fix prior to 10.0-R.

UPDATING

@@ -31,6 +31,19 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 10.x IS SLOW:
 	disable the most expensive debugging functionality run
 	"ln -s 'abort:false,junk:false' /etc/malloc.conf".)
 
+20130827:
+        Thomas Dickey (vendor author thereof) reports that dialog(1) since
+        2011/10/18 has a bug in handling --hline. Testers and I noticed the
+        --hline is not ignored but displayed as a NULL string, regardless of
+        value. This will cause confusion in some bsdconfig dialogs where the
+        --hline is used to inform users which keybindings to use. This will
+        likewise affect any other persons relying on --hline. It also looks
+        rather strange seeing "[]" at the bottom of dialog(1) widgets when
+        passing --hline "anything". Thomas said he will have a look in a few
+        weeks. NOTE: The "[]" brackets appear with the left-edge where it
+        would normally appear given the width of text to display, but the
+        displayed text is not there (part of the bug).
+
 20130821:
 	The PADLOCK_RNG and RDRAND_RNG kernel options are now devices.
 	Thus "device padlock_rng" and "device rdrand_rng" should be