Port dotnet/coreclr#9980
curl https://github.com/dotnet/coreclr/commit/6c73fd9440a68f064f4767347a4401155ee88899.patch | git am -p 4 --directory='src/Native/' --reject
* Add handling of multiple CMake installations in probe-win
Check if multiple CMake versions are installed, and use by default the first path available
Fixes #8221
* Fix typo in value accessor
* Restore previous null check in probe_win
* Remove redundant assignment
In CMake v10.2, the key `hklm:\SOFTWARE\Kitware` returns:
```powershell
Hive: HKEY_LOCAL_MACHINE\SOFTWARE\Kitware
Name Property
---- --------
CMake InstallDir : C:\Program Files\CMake\
```
with no space after `CMake` and property name `InstallDir`,
instead of `'(default)'`.
