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bors-servo 87a3ea0de9 Auto merge of #110 - faern:upgrade-core-foundation, r=jdm

Upgrade core foundation

This is a PR in a series of PRs originating at https://github.com/servo/core-foundation-rs/pull/132

The plan is to make a breaking change to `core-foundation` and release it as `0.5.0`. But before the merge/publish of `core-foundation` I will prepare a set of PRs making sure the entire dependency graph of Servo is ready for this change and can be switched over to `0.5.0` directly.

TODO before merge:
- [x] Merge `core-foundation` PR and publish.
- [x] Remove the last commit from this PR, so we depend on `core-foundation` from crates.io.

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2018-01-26 15:34:18 -06:00