added detail::columnStatistics2PassImpl() (but it is not used)
added detail::columnStatistics2PassImpl() (but it is not used)

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