[CMake] One more time about collecting sources

[Ruslan Baratov]

Hello!

I've read some articles about collecting sources in cmake, but not 
satisfied by
any of the described solutions. I've try various technics myself, some 
of them
failed for different reasons.  But finally I've found one simple 
solution which
I like.  I wrote wiki page in my github project. It's located here:

     https://github.com/ruslo/sugar/wiki/Collecting-sources

I'm interested in point of view of experienced cmake user (pitfalls? 
limitations?)

PS It's my first message here, so I want to say thank you, cmake is 
great project!