[Dune] Multilinear geometry local(global) method bug?

[Aleksejs Fomins]

Dear Dune,

In the Multilinear Geometry class method local(global) currently
implements Newton's method. The current termination condition for the
method is

while( dx.two_norm2() > tolerance );

Which means that currently the square of the estimated quadratic error
of local coordinate is compared with the error tolerance. Is this
intentional?

Regards,
Aleksejs

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