Merge topic 'TargetRunTimeDllDirs'

a2c9c4f202 Add test for the new TARGET_RUNTIME_DLL_PATHS genex
aa68de0a27 TARGET_RUNTIME_DLLS: minor refactoring of shared-check.cmake
2ce3d62ffb Help: add documentation for the new TARGET_RUNTIME_DLL_DIRS genex
c351dcd967 TARGET_RUNTIME_DLL_DIRS: add the new genex to cmGeneratorExpressionNode
064c3244da TARGET_RUNTIME_DLLS: fix test for this genex

Acked-by: Kitware Robot <kwrobot@kitware.com>
Tested-by: buildbot <buildbot@kitware.com>
Acked-by: Alex <leha-bot@yandex.ru>
Merge-request: !8247