/brz/remove-bazaar

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Interning the most common 'value' entries saves about 1-2% of peak memory.

Namely, interning the '0' content values.
Note that most values have a common prefix now, and an uncommon suffix...

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# TODO: make the guts of this methods on tree, branch.
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import os
 
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from bzrlib import (
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    errors,
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    revision as _mod_revision,