m-L in the error handler

[Daniel L. Weinreb <dlw at SCRC-TENEX>]

Johan's problem happens when you have a large frame in a small window,
such that all of the arguments and locals do not fit into the window.
Try making a medium-sized window, typing foo, and M-L'ing the *EVAL
frame and you can make the problem happen.  Of course, it does
go into the usual **MORE** break, so it doesn't really wrap around
before you can read it.  (Unless Johan is talking about some other
bug that I don't know about.)