Convert all DC records with 2 dates in dmdSec to Dublin Core date ranges.

[RussellMcOrmond]

Part of: #6 : Only use Dublin Core for Archival descriptive metadata
Will use tool: crkn-rcdr/cihm-metadatabus#61

[RussellMcOrmond]

Awaiting feedback on csv files generated by tool, prior to using those files for metadata updates.

[RussellMcOrmond]

Rather than doing the lookup and creating the directories using the web interface, I used:

sed <oocihm.88.csv -e 's/oocihm\.\([^,]*\).*/mkdir \1/'

This created a text 'mkdir' line that had the "oocihm." prefix removed, which is what the legacy OAIS packaging systems wants.

Metadata updates were successful, and all that remains is replication (Swift has a copy, but our backup servers haven't received the updates yet).

I'm doing another run of dmdsync and run the dmd-Preservation-DCmultidate tool again, to confirm there are no more Dublin Core records in preservation with 2 dates.

[RussellMcOrmond]

Completed, and confirmed there are no longer any DC files with double dates.