781ebbec8a
bootstrap major change detection implementation The use of `changelog-seen` and `bootstrap/CHANGELOG.md` has not been functional in any way for many years. We often do major/breaking changes but never update the changelog file or the `changelog-seen`. This is an alternative method for tracking major or breaking changes and informing developers when such changes occur. Example output when bootstrap detects a major change: ![image](https://github.com/rust-lang/rust/assets/39852038/ee802dfa-a02b-488b-a433-f853ce079b8a)
This directory is for scripts that are either never directly invoked or are not used very often. Scripts that are frequently used should be kept at the project root.