If you have used the mouse at all during the last 300 events then `C-x
C-k l' (`kmacro-edit-lossage') is broken: it just raises an error,
rather than showing you your keyboard events as a keyboard macro and
letting you edit the macro.  That's not very helpful.

This happens because `edmacro-fix-menu-commands' just punts, not
bothering to try to handle mouse events the same way it handles events
such as help-echo and switch-frame events.

The attached patch fixes that.  It also makes the error message explicit
about any unsupported event, instead of assuming that every unsupported
event is necessarily a mouse event.

In GNU Emacs 26.1 (build 1, x86_64-w64-mingw32)
 of 2018-05-30
Repository revision: 07f8f9bc5a51f5aa94eb099f3e15fbe0c20ea1ea
Windowing system distributor `Microsoft Corp.', version 10.0.16299
Configured using:
 `configure --without-dbus --host=x86_64-w64-mingw32
 --without-compress-install 'CFLAGS=-O2 -static -g3''