[Cmake] feature request - separate user and system cmake cache files

[Ken Martin]

Hey Tony,

Please provide an example of a value that does not work. As far as I
know either –C or -D should work. In fact I use both so I know for the
values I’m setting they work fine. I would like to fix any problems that
exist with these approaches.

Thanks
Ken

> I tried the solutions you suggested.  The -C and -D approaches do not
work for me in that the 
> values get overridden during the cmake configure process.