Merge topic 'path-resolver'

1a6015e5fc PathResolver: Add helper to compute normalized paths
2a6f86ec5e Tests/CMakeLib: Remove stray output from test loop
646f37b473 clang-tidy: disable modernize-concat-nested-namespaces

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: buildbot <buildbot@kitware.com>
Merge-request: !9965