replace simple decomposition with polar decomposition when setting CCPACSTransformation from CTiglTransform
replace simple decomposition with polar decomposition when setting CCPACSTransformation from CTiglTransform

fixes #553

DLR-SC/tigl,DLR-SC/tigl,DLR-SC/tigl,DLR-SC/tigl,DLR-SC/tigl,DLR-SC/tigl