added 'window size' parameter to eigenvalue convenience functions
added 'window size' parameter to eigenvalue convenience functions

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