How to detect Classic?

[Sarah Reichelt]

> From the TD...
>
> Note:  When running a Mac OS application in the Classic box on an OS X 
> system, the systemVersion function returns the version number of the 
> Classic system folder.
>
> Maybe that is a hint somehow.  I'm not sure how.
>
I'll do some more tests but I'm pretty sure this is wrong. I am still 
getting the OS X version number, not the Classic system folder version 
number. If my tests confirm this, I'll Bugzilla it.

Cheers,
Sarah