Change WiredTiger index key format to no longer use BSON

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      Change index key format to no longer use BSON in WiredTiger.
      Benefits include:

      • much faster key comparison
      • reduced storage size for indexes
      • take much better advantage of WT key prefix compression
      • no longer require custom collator, which means stock WT tools like repair work with no modification

      As this is an on-disk format change, indexes created before this change with WT will no longer be usable without running:
      mongod --storageEngine wiredTiger --repair

            Assignee:
            Mathias Stearn
            Reporter:
            Daniel Pasette (Inactive)
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              Created:
              Updated:
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