[Python-Dev] PEP 412 Key-Sharing Dictionary

[Mark Shannon]

I would like to get the new shared-keys dictionary implementation
committed, or rejected or further reviewed, if necessary.
It seems to have got a bit stuck at the moment.

As far as I am concerned it is ready to go in.
Memory usage is reduced, speed is roughly unchanged, and it passes all
the tests (except for 1 test in test_pprint which relies on dict/set
ordering, see http://bugs.python.org/issue13907)

Cheers,
Mark.