Fact: system32
Purpose: Returns the directory of the native system32 directory. For 32-bit ruby on 32-bit Windows, typically: 'C:Windowssystem32'. For 32-bit ruby on 64-bit Windows, typically: 'C:Windowssysnative'. For 64-bit ruby on 64-bit Windows, typically: 'C:Windowssystem32'.
Resolution: Checks for the existence of the `sysnative` directory, otherwise uses `system32`