Running 1.3.2 in System 7

[wilcox@cmns.think.com]

The functions choose-file-dialog and choose-new-file-dialog cause lisp
to quit when opened over a dialog. There are 3 things you need to do:

1.) Make a *window* the front window before calling these functions.
    (The window can be size 0 x 0 to make it inconspicuous.)
2.) Wrap a without-interrupts around the call.
3.) Load sys7growzone-patch.lisp (available from cambridge.apple.com).

This fix seems to work, although it took awhile to puzzle it out.
Much thanks to Bill St. Clair for helping me with it.