Heritrix: Internet Archive Web Crawler

This issue is now discussed in the new JIRA tracker at
http://webteam.archive.org/jira/browse/HER-949 -- please add further
comments at that location.

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Changed. Commit comment:

Implementation of [ 1223840 ] BdbWorkQueue origins should be
based on full classKey
* BdbMultipleWorkQueues.java
change calculateInsertKey to use full bytes of classKey,
not just 8-byte fingerprint, as prefix of insertKey
add calculateOriginKey to keep origin calculation near
insert calculation
* BdbWorkQueue.java
change getKeyPrefixHex to getPrefixClassKey --
prefix/classkey is now displayable text, rather than binary

Change passes unit test of expected key sorting behavior;
setting log level on BdbWorkQueue to FINE shows expected
now-textual prefix/class keys; two short test crawls work as
expected.

Closing as completed.

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This should be easy and will remove risk of very subtle bugs
in future.