issue REQUIRE-PATHNAME-DEFAULTS

[sandra%defun@cs.utah.edu (Sandra J Loosemore)]

Again, I agree with the general direction here.  I approve of the
decision to remove the part about mangling LOAD.

I'd like the description of REQUIRE changed to make it more clear that
it's the responsibility of the user, not REQUIRE, to load files after
the correctible error is signalled.  How about replacing the last
sentence with:

    This gives the user the opportunity to load the appropriate files
    from the debugger before continuing.

The "Rationale" section should include some mention of the motivation
for not requiring REQUIRE not to use *MODULES*.

-Sandra
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