Revert "bootstrap.conf: require bison 3.6 or later"
Add a description of the new feature/bug fix. Reference any relevant bugs.
- Code modified for feature
- Test suite updated with functionality tests
- Test suite updated with negative tests
- Documentation updated
- There is a test suite reasonably covering new functionality or modifications
- Function naming, parameters, return values, types, etc., are consistent with other code
- This feature/change has adequate documentation added
- No obvious mistakes in the code