added more rational tests
added more rational tests

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