[Dune] Replacement for Capabilities::isUnstructured

[Oliver Sander]

Dear Dune!
I was just about to use the grid capability 'isUnstructured' when
I realized that it is deprecated.  Unfortunately I do not remember
what is supposed to replace it.  Can you help me?

thanks,
Oliver

-- 
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* Oliver Sander                ** email: sander at mi.fu-berlin.de        *
* Freie Universität Berlin     ** phone: + 49 (30) 838 75348           *
* Institut für Mathematik      ** URL  : page.mi.fu-berlin.de/~sander  *
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* 14195 Berlin, Germany        ** Member of MATHEON (www.matheon.de)   *
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