NUMBERS

If a system variable was declared as deprecated without mention of an
alternative, the message would look funny, e.g. for @@delayed_insert_limit:

Warning 1287 '@@delayed_insert_limit' is deprecated and
will be removed in MySQL .

The message was meant to display the version number, but it's not
possible to give one when declaring a system variable.

The fix does two things:

1) The definition of the message
ER_WARN_DEPRECATED_SYNTAX_NO_REPLACEMENT is changed so that it does
not display a version number. I.e. in English the message now reads:

Warning 1287 The syntax '@@delayed_insert_limit' is deprecated and
will be removed in a future version.

2) The message ER_WARN_DEPRECATED_SYNTAX_WITH_VER is discontinued in
favor of ER_WARN_DEPRECATED_SYNTAX for system variables. This change
was already done in versions 5.6 and above as part of wl#5265. This
part is simply back-ported from the worklog.