Fixed final slab bug
Fixed final slab bug

This bug allowed a double slab to be made below by placing a compatible
slab on a "top" slab. The coordinates are always one lower, so now it
checks to see if the slab orientation can be made into a double.

johnsoch/cuberite,Altenius/cuberite,mc-server/MCServer,Fighter19/cuberite,QUSpilPrgm/cuberite,mc-server/MCServer,nicodinh/cuberite,zackp30/cuberite,electromatter/cuberite,MuhammadWang/MCServer,MuhammadWang/MCServer,nounoursheureux/MCServer,ionux/MCServer,MuhammadWang/MCServer,ionux/MCServer,mjssw/cuberite,jammet/MCServer,nicodinh/cuberite,nounoursheureux/MCServer,jammet/MCServer,nichwall/cuberite,jammet/MCServer,nichwall/cuberite,nichwall/cuberite,birkett/MCServer,Altenius/cuberite,johnsoch/cuberite,nevercast/cuberite,nounoursheureux/MCServer,linnemannr/MCServer,marvinkopf/cuberite,Tri125/MCServer,mc-server/MCServer,nevercast/cuberite,Altenius/cuberite,birkett/cuberite,Altenius/cuberite,guijun/MCServer,electromatter/cuberite,QUSpilPrgm/cuberite,Howaner/MCServer,mjssw/cuberite,johnsoch/cuberite,linnemannr/MCServer,tonibm19/cuberite,HelenaKitty/EbooMC,thetaeo/cuberite,Tri125/MCServer,guijun/MCServer,nichwall/cuberite,nounoursheureux/MCServer,SamOatesPlugins/cuberite,Schwertspize/cuberite,zackp30/cuberite,marvinkopf/cuberite,jammet/MCServer,HelenaKitty/EbooMC,mmdk95/cuberite,thetaeo/cuberite,tonibm19/cuberite,nicodinh/cuberite,tonibm19/cuberite,tonibm19/cuberite,Haxi52/cuberite,mmdk95/cuberite,birkett/cuberite,nevercast/cuberite,Fighter19/cuberite,nicodinh/cuberite,nichwall/cuberite,MuhammadWang/MCServer,electromatter/cuberite,mmdk95/cuberite,nevercast/cuberite,HelenaKitty/EbooMC,birkett/MCServer,birkett/MCServer,mmdk95/cuberite,Tri125/MCServer,SamOatesPlugins/cuberite,birkett/MCServer,ionux/MCServer,MuhammadWang/MCServer,bendl/cuberite,nounoursheureux/MCServer,mc-server/MCServer,kevinr/cuberite,mmdk95/cuberite,Haxi52/cuberite,Haxi52/cuberite,guijun/MCServer,Fighter19/cuberite,Haxi52/cuberite,mjssw/cuberite,Schwertspize/cuberite,kevinr/cuberite,nounoursheureux/MCServer,marvinkopf/cuberite,nevercast/cuberite,Howaner/MCServer,Fighter19/cuberite,zackp30/cuberite,Schwertspize/cuberite,birkett/MCServer,nichwall/cuberite,bendl/cuberite,mjssw/cuberite,Tri125/MCServer,electromatter/cuberite,electromatter/cuberite,jammet/MCServer,Frownigami1/cuberite,mc-server/MCServer,Schwertspize/cuberite,marvinkopf/cuberite,Altenius/cuberite,HelenaKitty/EbooMC,guijun/MCServer,bendl/cuberite,nicodinh/cuberite,jammet/MCServer,tonibm19/cuberite,Tri125/MCServer,Frownigami1/cuberite,Howaner/MCServer,Fighter19/cuberite,QUSpilPrgm/cuberite,Frownigami1/cuberite,Schwertspize/cuberite,thetaeo/cuberite,linnemannr/MCServer,marvinkopf/cuberite,kevinr/cuberite,birkett/cuberite,linnemannr/MCServer,zackp30/cuberite,Fighter19/cuberite,birkett/cuberite,kevinr/cuberite,linnemannr/MCServer,mjssw/cuberite,Haxi52/cuberite,kevinr/cuberite,birkett/cuberite,Howaner/MCServer,electromatter/cuberite,zackp30/cuberite,Haxi52/cuberite,thetaeo/cuberite,zackp30/cuberite,nicodinh/cuberite,SamOatesPlugins/cuberite,ionux/MCServer,birkett/MCServer,kevinr/cuberite,mmdk95/cuberite,linnemannr/MCServer,guijun/MCServer,QUSpilPrgm/cuberite,Howaner/MCServer,Frownigami1/cuberite,mjssw/cuberite,guijun/MCServer,johnsoch/cuberite,QUSpilPrgm/cuberite,bendl/cuberite,thetaeo/cuberite,SamOatesPlugins/cuberite,bendl/cuberite,ionux/MCServer,tonibm19/cuberite,SamOatesPlugins/cuberite,nevercast/cuberite,marvinkopf/cuberite,Frownigami1/cuberite,thetaeo/cuberite,johnsoch/cuberite,birkett/cuberite,Tri125/MCServer,QUSpilPrgm/cuberite,Howaner/MCServer,HelenaKitty/EbooMC,mc-server/MCServer,ionux/MCServer