gcc compatibility fixes
gcc compatibility fixes

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