[wpkg-users] Replace xmlhttp download with curl/wget

[Falko Trojahn]

Hello,

> So maybe we could (optionally) have an external tool handle the "download"
> tag - curl or wget are excellent specialised (and free/GPL) tools.
>
> Pros:
> * much more robust than the WSH download method
> * saves memory
> * faster (probably because of the memory savings)
> * Support not only for HTTP, but FTP too.
>
> Cons:
> * WPKG would rely on an external binary (so it's foreign code, but at
> least no license problems)
...
> What do you think?
>

We could introduce similar option like "rebootCmd:special", where 
psshutdown is used for reboot (from config.xml:
Setting rebootCmd to "special" will use tools\psshutdown.exe from
                 * from www.sysinternals.com - if it exists
).

So we can have predefined options for e.g. wget or curl in wpkg.js,
while preserving the possibility to use another tool.

Best regards,
Falko