[CMake] Using try_compile before project() command

[Bill Hoffman]

Carminati Federico wrote:
> Any hope to have this changed in a future release?
> Best regards,
> 

No, it really is out of the work flow of CMake.  First you find the 
working compiler and test it.  The CMakeLists.txt files should never 
force a compiler choice.  They should be compiler agnostic as much as 
possible so they remain portable.

-Bill