[MERGE] set_default deprecations, 2nd Edition

[Andrew Bennetts]

Andrew Bennetts has voted +1.
Status is now: Approved
Comment:
This looks very good to me.  This gets rid of a heap of ugly 
try/finallys that mucked about with the default format, and simply 
passes the required format as a parameter instead.  There's one typo I'd 
like you to fix, but even that was there before this branch :)

bzrlib/tests/bzrdir_implementations/test_bzrdir.py
--------------------------------------------------

"lastest" -> "latest"



For details, see: 
http://bundlebuggy.aaronbentley.com/request/%3C459E8A7C.4010900%40utoronto.ca%3E