Export only the top-level include path to dependents (#198)
Export only the top-level include path to dependents (#198)

* Export only the top-level include path to dependents

* remove an unused variable

Co-authored-by: Nelson Elhage <5189bc64eef7cb2f8e15afbc1a394127239e0cab@nelhage.com>
nelhage/rules_boost,nelhage/rules_boost