Implement prompt interface ".preproc" for toggling the external preprocessing of scripts. Mention in help that .exception and .preproc exist.
Implement prompt interface ".preproc" for toggling the external preprocessing of scripts.
Mention in help that .exception and .preproc exist.


git-svn-id: acec3fd5b7ea1eb9e79d6329d318e8118ee2e14f@34154 27541ba8-7e3a-0410-8455-c3a389f83636

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