Merge topic 'cmake-non-writable-build-dir'

0fd64345fe Tests: Add case covering non-writable CMAKE_BINARY_DIR
d91c02e40f Tests: Factor out RunCMake helper to get UNIX user id
5799d0e788 cmake: Improve error message if CMAKE_BINARY_DIR not writable

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: buildbot <buildbot@kitware.com>
Acked-by: Alex <leha-bot@yandex.ru>
Merge-request: !8970