Merge topic 'GNUInstallDirs-cached-default'

5071c93a78 GNUInstallDirs: Fix regression on -DCMAKE_INSTALL_<dir>=<default>

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: buildbot <buildbot@kitware.com>
Acked-by: Cristian Le <github@lecris.me>
Merge-request: !10921