Some github feedback pointed out that getting annotation input from
the player behaved differently from similar input for naming of
monsters and objects. The complaint stated that hitting <return>
without supplying any input removed the old annotation, where other
naming would leave the old name intact. 3.6.0 did misbehave that
way; current code does too if EDIT_GETLIN is disabled but behaves
as desired when it's enabled. (There's nothing that I can spot in
donamelevel() to explain why. I'm confused. Is tty_getlin()
returning the default answer instead of empty if that default text
is deleted at the prompt and no new text entered prior to <return>?)
Make donamelevel() work like mon/obj naming. Empty input leaves
existing annotation, if any, intact.
8710c2c29a