In TGraph::Fit remove previous TF1 object from the list of functions like in TH1::Fit
In TGraph::Fit remove previous TF1 object from the list of functions like in TH1::Fit


git-svn-id: acec3fd5b7ea1eb9e79d6329d318e8118ee2e14f@7449 27541ba8-7e3a-0410-8455-c3a389f83636

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