[cvs-nhc98] patch applied (hat): Hat: add error-case hooks in archive file.

[Malcolm Wallace]

Mon Mar 12 08:17:58 PST 2001  malcolm
  * Hat: add error-case hooks in archive file.
    When terminating the program with an error, plant an error message
    and expression-root at the beginning of the archive file.  This applies
    to pattern-match failures and black-holes at the moment.  Interrupts
    are still to come.

    M ./src/old/runtime/browsercomms.c -2 +29
    M ./src/old/runtime/io.c +5