added test for nonnegativeLeastSquares()
added test for nonnegativeLeastSquares()

xiwei-zhang/vigra,hmeine/vigra,hmeine/vigra,cbecker/vigra,ThomasWalter/vigra,dagophil/vigra,DaveRichmond-/vigra,dstoe/vigra,psteinb/vigra,mmuellner/vigra,capturePointer/vigra,capturePointer/vigra,martinsch/vigra,cha007/vigra,dagophil/vigra,cha007/vigra,dstoe/vigra,DaveRichmond-/vigra,cbecker/vigra,cbecker/vigra,stuarteberg/vigra,dstoe/vigra,mmuellner/vigra,funkey/vigra,DaveRichmond-/vigra,mmuellner/vigra,hmeine/vigra,xiwei-zhang/vigra,DaveRichmond-/vigra,hmeine/vigra,kod3r/vigra,ThomasWalter/vigra,funkey/vigra,mmuellner/vigra,capturePointer/vigra,dagophil/vigra,xiwei-zhang/vigra,timoMa/vigra,hmeine/vigra,mmuellner/vigra,ThomasWalter/vigra,cbecker/vigra,timoMa/vigra,funkey/vigra,DaveRichmond-/vigra,martinsch/vigra,stuarteberg/vigra,cbecker/vigra,martinsch/vigra,dstoe/vigra,cha007/vigra,mmuellner/vigra,psteinb/vigra,dagophil/vigra,kod3r/vigra,capturePointer/vigra,funkey/vigra,DaveRichmond-/vigra,xiwei-zhang/vigra,capturePointer/vigra,stuarteberg/vigra,xiwei-zhang/vigra,dagophil/vigra,cha007/vigra,timoMa/vigra,martinsch/vigra,stuarteberg/vigra,dagophil/vigra,kod3r/vigra,dstoe/vigra,kod3r/vigra,capturePointer/vigra,ThomasWalter/vigra,stuarteberg/vigra,ThomasWalter/vigra,psteinb/vigra,timoMa/vigra,hmeine/vigra,stuarteberg/vigra,xiwei-zhang/vigra,timoMa/vigra,psteinb/vigra,psteinb/vigra,cha007/vigra,ThomasWalter/vigra,capturePointer/vigra,funkey/vigra,timoMa/vigra,martinsch/vigra,kod3r/vigra,cbecker/vigra,cha007/vigra,psteinb/vigra,kod3r/vigra,funkey/vigra,hmeine/vigra,ThomasWalter/vigra,cha007/vigra,psteinb/vigra,xiwei-zhang/vigra,dstoe/vigra,funkey/vigra,dstoe/vigra,timoMa/vigra,dagophil/vigra,DaveRichmond-/vigra,kod3r/vigra,mmuellner/vigra,stuarteberg/vigra,martinsch/vigra