[no subject]

[David Kastrup]

Unless objected to timely, I intend to push this change tomorrow.  It
should not affect current operation but brings Emacs' behavior for
synthesized Lisp events containing an "up-" modifier in line with the
current behavior of "down-" events.  Such events are not produced by
Emacs itself; no change in behavior for existing code is expected.

I have code that might eventually make it into ELPA that benefits from
these changes.