revert the ArchiveIterator atomic-rewrite code, per Theo's request; replace with a write-in-place as before, but hopefully a little safer
revert the ArchiveIterator atomic-rewrite code, per Theo's request; replace with a write-in-place as before, but hopefully a little safer

git-svn-id: e9fe9b84e32fc5e57b7d09c40cd78b14ea28ed71@562180 13f79535-47bb-0310-9956-ffa450edef68

apache/spamassassin,apache/spamassassin,apache/spamassassin,apache/spamassassin,apache/spamassassin