storing mouse-movement events in recent-keys and keyboard macros

[Kim F. Storm]

In general, mouse-tracking generates lots of mouse-movement events.
These events are stored unconditionally recorded in recent-keys and
keyboard macros.

Specifically, if you enable tooltip-gud-tips-p, mouse-tracking is
permanently active in (e.g.) .c files.

IMO, multiple mouse-movement events should be added only once to
recent-keys, and mouse-movement should never be stored in a keyboard
macro.  This is similar to what we already do for help-echo.

-- 
Kim F. Storm <address@hidden> http://www.cua.dk