D2750: thirdparty: start vendoring cbor python library

[indygreg (Gregory Szorc)]

indygreg accepted this revision.
indygreg added a comment.
This revision is now accepted and ready to land.


  Having looked at the CBOR specification, I really like it! It is a better version of JSON and MessagePack. It's a reasonable format for at-rest storage and for exchange. While you may want to use it for state files, I think I'll use it for the wire protocol. It sure beats rolling custom data formats.
  
  When I queue this, I'm going to roll the deletes from the next commit into this one because I don't see any value having the files in the final repo history. I'll also fold in upstream Git commit 84181540f6eb650437e3f73cd104a65661fe8e67, which switches to relative imports.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D2750

To: pulkit, #hg-reviewers, indygreg
Cc: indygreg, martinvonz, mercurial-devel