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[CHANGE] tools directory in TransferCalc was an old copy and is deprectaed. Replaced by link that ensures use of the latest module specific tools.

[FIX] Use osg::Matrixf instead of osg::Matrix

[FIX] fiber stipples finally work now; there might still be a problem with the texture lookup at the voxel positions

[FIX] fiber stipples now actually render stipples again; there is still a problem with stipple directions

Previous commitment had some bug fixes. But it also said that some bugs dealing
with the surface segmentation still remained. This commit fixes them. The
errors consisted of not initialized member variables in some classes regarding
point instances of parameter space clustering and boundary detection.