rust-dirstate: rust-cpython bridge for dirstatemap...
rust-dirstate: rust-cpython bridge for dirstatemap
This change also showcases the limitations of the `py_shared_ref!` macro.
See the previous commit 'rust-dirstate: rust implementation of dirstatemap`
for an explanation for the TODOs in the code.
Differential Revision:
https://phab.mercurial-scm.org/D6633