[Dune] Exception specifier for *operator new in debugallocator

[Christoph Grüninger]

Hello Christian,
you are posing the right question. It seems to be the -pedantic flag. If 
I remove it, my g++-4.7 accepts it with and without -std=c++11 / 
-std=c++0x. If I remove the -std=c++11 / -std=c++0x it works, too.
Clang 3.1 does not bother in any case.

Probably I have to drop -pedantic.

Bye
Christoph

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