Merge topic 'ctest-remove-cmake-intdir'

db95afce Tests/OutDir: Remove stale cache entry on multi-config generators
c6134ca6 CTest: Remove usages of CMAKE_INTDIR

Acked-by: Kitware Robot <kwrobot@kitware.com>
Tested-by: buildbot <buildbot@kitware.com>
Merge-request: !8176