Compile "environmentvariable_probe" on Windows
Compile "environmentvariable_probe" on Windows

By default, the independent "environmentvariable_probe" is not compiled on
Windows systems. By deleting the NOTWIN32 variable in the CMakeLists.txt,
we can now compile and use the independent "environmentvariable_probe" on Windows.

OpenSCAP/openscap,OpenSCAP/openscap,OpenSCAP/openscap,OpenSCAP/openscap,OpenSCAP/openscap,OpenSCAP/openscap