Christopher Tate a7de384550 Only write to the pending-backup journal when necessary
We now only commit to the pending-backup journal on disk the first time that a
given package is added to the backup set.  This avoids a lot of write thrashing
of the disk, particularly since Settings tends to call dataChanged() a great
many times during boot, while the Settings UI is in use, etc.
2009-07-07 14:50:26 -07:00
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