[CMake] lexical comparison of cmake version numbers

[Brandon J. Van Every]

David Cole wrote:
> Brandon J. Van Every wrote:
>
>
>> Anyways, I'll be happy to improve the readability of the Dashboard 
>> Variables description when I'm more awake.
>
> If you do, please don't claim it's comprehensive. It's a more complete 
> list than what's been manually entered so far on 
> http://www.cmake.org/Wiki/CMake_Useful_Variables, but it's still shy 
> of comprehensive.


I've edited it.  It is now moved to a "Variables not listed here" section.


Cheers,
Brandon Van Every