[CMake] CMAKE_ROOT env variable not honored anymore

[Martin Apel]

Hi all,

we used CMake 2.8 so far and had used the environment variable 
CMAKE_ROOT to tell the cmake binary, where to find its Modules etc. 
directories.
We used this in a multiplatform context to store the 
architecture-independent files of CMake only once.
It seems, that CMake 3.0 does not honor this environment variable 
anymore. Is this a bug or a feature?

Martin