Part of bzrlib
| Function | _crc32 | Undocumented |
| Function | _search_key_16 | Map the key tuple into a search key string which has 16-way fan out. |
| Function | _search_key_255 | Map the key tuple into a search key string which has 255-way fan out. |
| Function | _deserialise_leaf_node | Deserialise bytes, with key key, into a LeafNode. |
| Function | _deserialise_internal_node | Undocumented |
| Function | _bytes_to_text_key | Take a CHKInventory value string and return a (file_id, rev_id) tuple |
Map the key tuple into a search key string which has 255-way fan out.
We use 255-way because '
' is used as a delimiter, and causes problems
while parsing.