Add optimisation like in hadd.cxx
Add optimisation like in hadd.cxx


git-svn-id: acec3fd5b7ea1eb9e79d6329d318e8118ee2e14f@9572 27541ba8-7e3a-0410-8455-c3a389f83636

omazapa/root,CristinaCristescu/root,mattkretz/root,evgeny-boger/root,vukasinmilosevic/root,zzxuanyuan/root,veprbl/root,sbinet/cxx-root,beniz/root,abhinavmoudgil95/root,esakellari/root,bbockelm/root,simonpf/root,buuck/root,abhinavmoudgil95/root,mattkretz/root,gbitzes/root,vukasinmilosevic/root,ffurano/root5,ffurano/root5,omazapa/root-old,Y--/root,nilqed/root,esakellari/my_root_for_test,zzxuanyuan/root-compressor-dummy,evgeny-boger/root,veprbl/root,agarciamontoro/root,mkret2/root,davidlt/root,perovic/root,Dr15Jones/root,sirinath/root,abhinavmoudgil95/root,jrtomps/root,bbockelm/root,dfunke/root,sbinet/cxx-root,perovic/root,davidlt/root,Dr15Jones/root,esakellari/root,buuck/root,omazapa/root,mattkretz/root,evgeny-boger/root,agarciamontoro/root,buuck/root,zzxuanyuan/root-compressor-dummy,vukasinmilosevic/root,CristinaCristescu/root,davidlt/root,georgtroska/root,sirinath/root,nilqed/root,krafczyk/root,perovic/root,satyarth934/root,omazapa/root-old,dfunke/root,0x0all/ROOT,mattkretz/root,CristinaCristescu/root,smarinac/root,zzxuanyuan/root,root-mirror/root,vukasinmilosevic/root,veprbl/root,BerserkerTroll/root,sirinath/root,abhinavmoudgil95/root,0x0all/ROOT,mkret2/root,Dr15Jones/root,gganis/root,kirbyherm/root-r-tools,tc3t/qoot,alexschlueter/cern-root,satyarth934/root,arch1tect0r/root,jrtomps/root,esakellari/root,mkret2/root,evgeny-boger/root,agarciamontoro/root,tc3t/qoot,gbitzes/root,pspe/root,buuck/root,0x0all/ROOT,cxx-hep/root-cern,thomaskeck/root,sirinath/root,Y--/root,evgeny-boger/root,agarciamontoro/root,strykejern/TTreeReader,esakellari/my_root_for_test,omazapa/root-old,nilqed/root,zzxuanyuan/root-compressor-dummy,georgtroska/root,smarinac/root,arch1tect0r/root,krafczyk/root,omazapa/root-old,jrtomps/root,mkret2/root,strykejern/TTreeReader,agarciamontoro/root,beniz/root,krafczyk/root,root-mirror/root,zzxuanyuan/root-compressor-dummy,perovic/root,bbockelm/root,buuck/root,thomaskeck/root,omazapa/root,simonpf/root,lgiommi/root,beniz/root,root-mirror/root,Dr15Jones/root,agarciamontoro/root,simonpf/root,dfunke/root,davidlt/root,buuck/root,beniz/root,root-mirror/root,zzxuanyuan/root,davidlt/root,evgeny-boger/root,arch1tect0r/root,esakellari/root,dfunke/root,karies/root,georgtroska/root,mhuwiler/rootauto,esakellari/my_root_for_test,krafczyk/root,smarinac/root,olifre/root,nilqed/root,smarinac/root,lgiommi/root,Y--/root,agarciamontoro/root,tc3t/qoot,alexschlueter/cern-root,mkret2/root,Duraznos/root,gganis/root,omazapa/root,evgeny-boger/root,esakellari/root,vukasinmilosevic/root,jrtomps/root,veprbl/root,simonpf/root,simonpf/root,omazapa/root-old,sirinath/root,vukasinmilosevic/root,sirinath/root,esakellari/my_root_for_test,esakellari/my_root_for_test,thomaskeck/root,simonpf/root,nilqed/root,gbitzes/root,gganis/root,beniz/root,bbockelm/root,olifre/root,mattkretz/root,cxx-hep/root-cern,pspe/root,lgiommi/root,sbinet/cxx-root,CristinaCristescu/root,abhinavmoudgil95/root,sawenzel/root,lgiommi/root,strykejern/TTreeReader,esakellari/root,root-mirror/root,arch1tect0r/root,simonpf/root,gganis/root,mkret2/root,dfunke/root,BerserkerTroll/root,pspe/root,simonpf/root,root-mirror/root,mattkretz/root,CristinaCristescu/root,arch1tect0r/root,lgiommi/root,georgtroska/root,Duraznos/root,Dr15Jones/root,abhinavmoudgil95/root,satyarth934/root,evgeny-boger/root,thomaskeck/root,esakellari/root,jrtomps/root,abhinavmoudgil95/root,karies/root,agarciamontoro/root,CristinaCristescu/root,sirinath/root,esakellari/my_root_for_test,CristinaCristescu/root,jrtomps/root,vukasinmilosevic/root,cxx-hep/root-cern,cxx-hep/root-cern,Y--/root,buuck/root,gbitzes/root,vukasinmilosevic/root,sirinath/root,zzxuanyuan/root-compressor-dummy,georgtroska/root,Dr15Jones/root,sawenzel/root,kirbyherm/root-r-tools,olifre/root,smarinac/root,bbockelm/root,0x0all/ROOT,thomaskeck/root,simonpf/root,BerserkerTroll/root,mattkretz/root,gbitzes/root,arch1tect0r/root,sirinath/root,strykejern/TTreeReader,kirbyherm/root-r-tools,Duraznos/root,mattkretz/root,esakellari/my_root_for_test,bbockelm/root,mattkretz/root,karies/root,vukasinmilosevic/root,jrtomps/root,zzxuanyuan/root-compressor-dummy,perovic/root,jrtomps/root,mattkretz/root,cxx-hep/root-cern,0x0all/ROOT,arch1tect0r/root,Dr15Jones/root,georgtroska/root,sbinet/cxx-root,Duraznos/root,thomaskeck/root,kirbyherm/root-r-tools,gganis/root,thomaskeck/root,cxx-hep/root-cern,gganis/root,veprbl/root,Duraznos/root,sirinath/root,0x0all/ROOT,Y--/root,zzxuanyuan/root-compressor-dummy,root-mirror/root,kirbyherm/root-r-tools,veprbl/root,georgtroska/root,kirbyherm/root-r-tools,gbitzes/root,satyarth934/root,beniz/root,mhuwiler/rootauto,karies/root,sawenzel/root,simonpf/root,bbockelm/root,nilqed/root,zzxuanyuan/root,sbinet/cxx-root,dfunke/root,pspe/root,pspe/root,thomaskeck/root,lgiommi/root,ffurano/root5,zzxuanyuan/root-compressor-dummy,zzxuanyuan/root,perovic/root,buuck/root,gbitzes/root,sbinet/cxx-root,veprbl/root,zzxuanyuan/root,gganis/root,krafczyk/root,smarinac/root,veprbl/root,olifre/root,zzxuanyuan/root,pspe/root,olifre/root,davidlt/root,evgeny-boger/root,Y--/root,pspe/root,mhuwiler/rootauto,zzxuanyuan/root-compressor-dummy,strykejern/TTreeReader,davidlt/root,tc3t/qoot,kirbyherm/root-r-tools,olifre/root,lgiommi/root,perovic/root,tc3t/qoot,georgtroska/root,evgeny-boger/root,sbinet/cxx-root,Y--/root,gganis/root,veprbl/root,sawenzel/root,omazapa/root,gbitzes/root,perovic/root,BerserkerTroll/root,beniz/root,gbitzes/root,mattkretz/root,Duraznos/root,ffurano/root5,veprbl/root,omazapa/root,zzxuanyuan/root-compressor-dummy,zzxuanyuan/root,lgiommi/root,krafczyk/root,mhuwiler/rootauto,davidlt/root,sawenzel/root,lgiommi/root,omazapa/root,sawenzel/root,BerserkerTroll/root,nilqed/root,Y--/root,thomaskeck/root,beniz/root,smarinac/root,CristinaCristescu/root,agarciamontoro/root,nilqed/root,esakellari/my_root_for_test,omazapa/root-old,BerserkerTroll/root,karies/root,dfunke/root,zzxuanyuan/root,mhuwiler/rootauto,satyarth934/root,krafczyk/root,gbitzes/root,ffurano/root5,sbinet/cxx-root,alexschlueter/cern-root,olifre/root,zzxuanyuan/root,omazapa/root,olifre/root,arch1tect0r/root,esakellari/root,zzxuanyuan/root,BerserkerTroll/root,smarinac/root,beniz/root,alexschlueter/cern-root,mkret2/root,pspe/root,esakellari/root,Duraznos/root,arch1tect0r/root,lgiommi/root,buuck/root,smarinac/root,sawenzel/root,krafczyk/root,BerserkerTroll/root,sbinet/cxx-root,abhinavmoudgil95/root,davidlt/root,buuck/root,mhuwiler/rootauto,omazapa/root,krafczyk/root,gbitzes/root,omazapa/root,davidlt/root,karies/root,nilqed/root,mkret2/root,cxx-hep/root-cern,BerserkerTroll/root,veprbl/root,omazapa/root-old,tc3t/qoot,beniz/root,simonpf/root,abhinavmoudgil95/root,satyarth934/root,krafczyk/root,Duraznos/root,0x0all/ROOT,alexschlueter/cern-root,mhuwiler/rootauto,bbockelm/root,thomaskeck/root,jrtomps/root,pspe/root,pspe/root,cxx-hep/root-cern,zzxuanyuan/root,mkret2/root,gganis/root,omazapa/root-old,dfunke/root,bbockelm/root,georgtroska/root,olifre/root,bbockelm/root,sawenzel/root,smarinac/root,perovic/root,sawenzel/root,sawenzel/root,gganis/root,CristinaCristescu/root,Duraznos/root,nilqed/root,BerserkerTroll/root,lgiommi/root,jrtomps/root,davidlt/root,vukasinmilosevic/root,root-mirror/root,Duraznos/root,CristinaCristescu/root,esakellari/root,Y--/root,satyarth934/root,arch1tect0r/root,olifre/root,karies/root,ffurano/root5,georgtroska/root,perovic/root,krafczyk/root,tc3t/qoot,agarciamontoro/root,abhinavmoudgil95/root,karies/root,beniz/root,alexschlueter/cern-root,satyarth934/root,vukasinmilosevic/root,root-mirror/root,nilqed/root,gganis/root,BerserkerTroll/root,alexschlueter/cern-root,Duraznos/root,karies/root,esakellari/my_root_for_test,karies/root,sbinet/cxx-root,root-mirror/root,mhuwiler/rootauto,0x0all/ROOT,mkret2/root,agarciamontoro/root,omazapa/root-old,dfunke/root,tc3t/qoot,CristinaCristescu/root,bbockelm/root,esakellari/my_root_for_test,evgeny-boger/root,sawenzel/root,jrtomps/root,perovic/root,omazapa/root-old,omazapa/root,mhuwiler/rootauto,satyarth934/root,sirinath/root,tc3t/qoot,mkret2/root,buuck/root,ffurano/root5,zzxuanyuan/root-compressor-dummy,0x0all/ROOT,omazapa/root-old,arch1tect0r/root,esakellari/root,dfunke/root,root-mirror/root,dfunke/root,Y--/root,georgtroska/root,mhuwiler/rootauto,satyarth934/root,abhinavmoudgil95/root,strykejern/TTreeReader,mhuwiler/rootauto,satyarth934/root,olifre/root,tc3t/qoot,pspe/root,karies/root,Y--/root,sbinet/cxx-root,strykejern/TTreeReader