[MERGE] Remove most calls to safe_file_id and safe_revision_id.

[Martin Pool]

As previously suggested by John, this removes the compatibility
interface that accepted unicode objects for revision_id parameters.

-- 
Martin Pool
-------------- next part --------------
A non-text attachment was scrubbed...
Name: bzr-mail-7XZfq1.patch
Type: text/x-diff
Size: 71229 bytes
Desc: not available
Url : https://lists.ubuntu.com/archives/bazaar/attachments/20070925/3abc6641/attachment-0001.bin