[Success!] [MERGE] Review feedback on hash trie inventories, and describe radix tree inventories, plus some details on hash trie implementation.

[Bundle Buggy]

This change has been merged.
Previous status: Conditionally approved

For details, see: 
http://bundlebuggy.aaronbentley.com/project/bzr/request/%3C1219798121.31549.383.camel%40lifeless-64%3E
Project: Bazaar