[CMake] Using CPack to create multiple packages

[Ted Berg]

I have a body of source code that I am building with CMake, and I am 
interested in using CPack for packaging.  The project currently 
generates 5 packages during the course of a build.  I might be able to 
reduce that to 3, but it is unlikely to go lower.

Can CPack do this in one pass?  My initial experiments suggest that it 
cannot.  I have not, however, found a lot of documentation for CPack so 
it is quite possible that I missed something.

Ted