[CMake] file(DOWNLOAD ...) SSL support

[Bill Hoffman]

Michael Wild wrote:

> That's not a real solution for me, since I intend to distribute my 
> source code and people won't be happy if their download fails. And 
> replacing the DLL/so/dylib isn't an option either, because this requires 
> too much manual intervention.
> 
> That means I'm probably stuck with searching for wget/curl, using them 
> if present, and if they fail (or are not present), tell the user to 
> download the file with his browser and put it in a specific directory.
> 
> I wonder how e.g. Microsoft, Apple or Mozilla deal with these ridiculous 
> export control regulations?
> 
> 
They make you agree to licenses before using the software... However, I 
did find this:

https://developer.mozilla.org/En/Mozilla_Crypto_FAQ

However, I will have to get legal advise before moving on with this in 
CMake.  It could take some time... :(

-Bill