reverted definition of Int32; added macros VIGRA_BITSOF_INT etc.
reverted definition of Int32; added macros VIGRA_BITSOF_INT etc.

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