[Dune] Changes in Quadraturerules?

[Patrick Leidenberger]

Hi all,

in the file dune-grid/grid/common/quadraturerules/quadraturerules.cc
are some changes from revision 3752 to 3753.

Can anybody explain me what's the effect of these changes on my code's
results (using quadrature order 1 on tetrahedra, ALUGrid)?
I observe different finite element matrices with 3 times slower convergence.

Thanks a lot

Patrick