Exim version 4.04
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1.  Fix 10 for 4.03 had a bug in it, which could cause problems when converting
    from an earlier 4.xx release with delayed "one_time" messages on the spool.
    4.03 incorrectly complains about spool format errors (and refuses to
    process these messages).

2.  Changed the status of the text widgets in the monitor from Append to Edit,
    because this matters on some versions of X.

3.  Change 22 for 4.03 turns out to be misguided. Luckily it is controlled by
    a compile-time macro. I have removed the settings from OS/os.h-Linux that
    made it try to use these functions.

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