[CMake] Problem with CMake 3.3.0-rc3

[Clifford Yapp]

When running the BRL-CAD configure process with the latest CMake
release candidate, the first configure pass completes successfully.
The second pass fails almost immediately with the error:

CMake Error at CMakeLists.txt:120 (configure_file):
Unknown CMake command "configure_file".

Configuring incomplete, errors occurred!

Has anyone else seen this?

Cheers,
CY