added pixel neighborhood and contour circulator tests
added pixel neighborhood and contour circulator tests

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