[CMake] Selecting runtime library on Visual Studio projects

[Sylvain Benner]

> Do I really need your macro or do I need a development version of CMake to 
> make this work? Do I need to patch and recompile CMake to use this 
> solution? Will these changes be included in future CMake versions?

The macro won't work without the modification, actually you have to patch 
and recompile CMake in order to use this solution.
Maybe there is another way to do it, wait until a CMake senior answers to 
you.
If there is no other solution, you can submit a feature request here: 
http://www.cmake.org/Bug

Sylvain