Merge topic 'normalize-input-paths'

ee83165923 cmake: Explicitly normalize input paths as they exist on disk
9d44a77454 find_*: Explicitly normalize found paths as they exist on disk
967d3ea85c cmake-gui: Explicitly normalize input paths as they exist on disk
074ad98ebc ctest: Explicitly normalize input paths as they exist on disk
1f14238701 cpack: Explicitly normalize input paths as they exist on disk
9fe09ebc53 cmSystemTools: Add GetEnvPathNormalized to get paths from environment
2108f3507f cmSystemTools: Add SplitEnvPathNormalized to split paths from environment
6d57403e14 cmSystemTools: Fix SplitEnvPath to avoid empty paths
...

Acked-by: Kitware Robot <kwrobot@kitware.com>
Tested-by: buildbot <buildbot@kitware.com>
Merge-request: !9929