[CMake] Install files at absolute position?

[Zachary Pincus]

Hello again,

I'm wondering if there is any good way to have CMake install a  
particular file at an absolute position in the filesystem (not  
prefixed by CMAKE_INSTALL_PREFIX) during 'make install'.

It's clearly possible to send a file to any given location during the  
configure or build step, but it's more appropriate to do this during  
install, in my case.

Any thoughts? (and yes, the files do need to be at specific  
positions; for example in a python site-packages directory).

Thanks,

Zach