- changed the convolution implementation for improved use of cpu cache resulting in increased speed - fixed small bug which prevented the gradient-generating functions from compiling
- changed the convolution implementation for improved use of cpu cache resulting in increased speed
- fixed small bug which prevented the gradient-generating functions from compiling

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