[themes] Tango iconset: Default for drupal, is NOT GPL.

[grohk]

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Trae McCombs wrote:
> I am in favor of the 2nd.  I don't see the problem behind the CC license.
> It's non-code.  Sure, I'm all for GPL when it comes to source code, but
> when
> it's an image or document or whatever, what does it matter?

It does matter, since there are a number of CC licenses to chose from
and changing the policy to allow for these would be non-trivial.  The
license in question has an attribution clause which can be interpreted
in several ways I guess, but in my mind would force each site that uses
the icons to attribute the original author.  The GPL makes no such demand.

I am in favor of option 1.

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