[MERGE] bzrlib.trace.debug_memory() helper

[Andrew Bennetts]

Andrew Bennetts has voted approve.
Status is now: Approved
Comment:
I wonder if perhaps we should leave the "if 'memory' in 
debug.debug_flags" check to the caller of debug_memory, just like we do 
elsewhere.  I'm happy for this to get merged, though.

For details, see: 
http://bundlebuggy.aaronbentley.com/project/bzr/request/%3C48C80FC7.6000600%40arbash-meinel.com%3E
Project: Bazaar