[CMake] Expected boost path structure.

[John Drescher]

> You're welcome. Also, if you have to run it again, your "message" code
> should run before and after finding boost so you can see what it
> changed...
>
It changed exactly as you said:

Check for working C compiler using: Visual Studio 9 2008
Check for working C compiler using: Visual Studio 9 2008 -- works
Detecting C compiler ABI info
Detecting C compiler ABI info - done
Check for working CXX compiler using: Visual Studio 9 2008
Check for working CXX compiler using: Visual Studio 9 2008 -- works
Detecting CXX compiler ABI info
Detecting CXX compiler ABI info - done
BOOST_ROOTENV=X:/32bit/VC.90/Libraries/boost-1.45.0
BOOST_ROOTCMake=
Boost version: 1.45.0
Configuring done