do not store exported references

[[Imported from SVN: r3247]]

[[Imported from SVN: r3246]]

[[Imported from SVN: r3245]]

[[Imported from SVN: r3244]]

[[Imported from SVN: r3243]]

[[Imported from SVN: r3242]]

[[Imported from SVN: r3241]]

[[Imported from SVN: r3240]]

[[Imported from SVN: r3239]]

This class gets references of local function implemenatation and stores
them on a stack.

[[Imported from SVN: r3238]]

[[Imported from SVN: r3237]]

[[Imported from SVN: r3236]]

[[Imported from SVN: r3235]]

[[Imported from SVN: r3234]]

  independent from dimension.
* MonomialShapeFunctionSet still only 2d

[[Imported from SVN: r3233]]

[[Imported from SVN: r3232]]

[[Imported from SVN: r3231]]

... seems to work ( at least for me :-) )

[[Imported from SVN: r3230]]

[[Imported from SVN: r3229]]

interpolation works now

[[Imported from SVN: r3228]]

[[Imported from SVN: r3227]]

boundaryId instead of BoundaryEntity

[[Imported from SVN: r3226]]

[[Imported from SVN: r3225]]

[[Imported from SVN: r3224]]

every week again.

[[Imported from SVN: r3223]]

[[Imported from SVN: r3222]]

breadth of an aggregate.

[[Imported from SVN: r3221]]

[[Imported from SVN: r3220]]

[[Imported from SVN: r3219]]

[[Imported from SVN: r3218]]

[[Imported from SVN: r3217]]

[[Imported from SVN: r3216]]

[[Imported from SVN: r3215]]

[[Imported from SVN: r3214]]

[[Imported from SVN: r3213]]

[[Imported from SVN: r3212]]

and BilinearSurfaceMapping, because the points are not used.

[[Imported from SVN: r3211]]

[[Imported from SVN: r3210]]

[[Imported from SVN: r3209]]

Used the fabulous DUNE debug streams to automatically disable debug
output in productive runs.

[[Imported from SVN: r3208]]