[CMake] remove filename line when building under windows

[Brad King]

Yann Renard wrote:
> is it possible to remove the line containing the compiled filename under 
> windows (MS visual studio 8) ? this line is printed by cl I imagine but 
> cmake already informs about the built file. this is not clean in my 
> opinion.

To my knowledge this is not possible.  We have to display all output 
produced by the native tools, and cl always prints this output.

-Brad