From Andreas: performance improvement when closing read-only files.
From Andreas:
performance improvement when closing read-only files.


git-svn-id: acec3fd5b7ea1eb9e79d6329d318e8118ee2e14f@14268 27541ba8-7e3a-0410-8455-c3a389f83636

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