[CMake] New warnings in CMake 2.8.4-rc2

[Emmanuel Blot]

Hello,

How to disable the new warnings CMake 2.8.4-rc2 emits, such as the
following ones?

CMake Warning: The variable, 'NAMEFUNC', specified manually, was not
used during the generation.
CMake Warning: The variable, 'SAJOBS', specified manually, was not
used during the generation.
CMake Warning: The variable, 'TAG_RELEASE', specified manually, was
not used during the generation.
CMake Warning: The variable, 'USER_COMPONENTS_PATH', specified
manually, was not used during the generation.
CMake Warning: The variable, 'XCC_VER', specified manually, was not
used during the generation.

Is there a POLICY switch to enable/disable this new feature?

Thanks,
Manu