Add support for //!< doxygen comment (i.e. not confused it with io transientness).
Add support for //!< doxygen comment (i.e. not confused it with io transientness).

This fixes ROOT-6888.

bbockelm/root,gbitzes/root,satyarth934/root,zzxuanyuan/root-compressor-dummy,nilqed/root,CristinaCristescu/root,sirinath/root,arch1tect0r/root,mhuwiler/rootauto,zzxuanyuan/root-compressor-dummy,arch1tect0r/root,olifre/root,beniz/root,vukasinmilosevic/root,beniz/root,thomaskeck/root,perovic/root,sbinet/cxx-root,agarciamontoro/root,simonpf/root,nilqed/root,abhinavmoudgil95/root,BerserkerTroll/root,mhuwiler/rootauto,karies/root,bbockelm/root,satyarth934/root,Y--/root,zzxuanyuan/root,pspe/root,sirinath/root,georgtroska/root,CristinaCristescu/root,zzxuanyuan/root-compressor-dummy,karies/root,esakellari/my_root_for_test,jrtomps/root,jrtomps/root,gganis/root,lgiommi/root,karies/root,thomaskeck/root,omazapa/root-old,dfunke/root,dfunke/root,nilqed/root,jrtomps/root,mhuwiler/rootauto,vukasinmilosevic/root,lgiommi/root,agarciamontoro/root,beniz/root,BerserkerTroll/root,CristinaCristescu/root,gbitzes/root,mhuwiler/rootauto,abhinavmoudgil95/root,sirinath/root,bbockelm/root,veprbl/root,mattkretz/root,root-mirror/root,esakellari/root,dfunke/root,sawenzel/root,mattkretz/root,root-mirror/root,veprbl/root,nilqed/root,karies/root,jrtomps/root,omazapa/root,sawenzel/root,mhuwiler/rootauto,esakellari/root,bbockelm/root,esakellari/my_root_for_test,vukasinmilosevic/root,satyarth934/root,zzxuanyuan/root,dfunke/root,jrtomps/root,agarciamontoro/root,dfunke/root,arch1tect0r/root,jrtomps/root,buuck/root,simonpf/root,thomaskeck/root,mhuwiler/rootauto,veprbl/root,lgiommi/root,krafczyk/root,perovic/root,evgeny-boger/root,esakellari/my_root_for_test,arch1tect0r/root,nilqed/root,gganis/root,krafczyk/root,georgtroska/root,root-mirror/root,CristinaCristescu/root,omazapa/root-old,sawenzel/root,omazapa/root,davidlt/root,Y--/root,buuck/root,satyarth934/root,abhinavmoudgil95/root,vukasinmilosevic/root,lgiommi/root,mhuwiler/rootauto,Duraznos/root,Y--/root,jrtomps/root,pspe/root,beniz/root,pspe/root,gbitzes/root,CristinaCristescu/root,beniz/root,thomaskeck/root,dfunke/root,Duraznos/root,root-mirror/root,sbinet/cxx-root,beniz/root,Duraznos/root,mattkretz/root,lgiommi/root,Duraznos/root,karies/root,gganis/root,CristinaCristescu/root,mhuwiler/rootauto,sirinath/root,agarciamontoro/root,root-mirror/root,esakellari/root,lgiommi/root,gganis/root,agarciamontoro/root,sawenzel/root,sirinath/root,thomaskeck/root,zzxuanyuan/root,agarciamontoro/root,krafczyk/root,abhinavmoudgil95/root,nilqed/root,beniz/root,satyarth934/root,veprbl/root,zzxuanyuan/root-compressor-dummy,olifre/root,davidlt/root,gbitzes/root,jrtomps/root,davidlt/root,esakellari/my_root_for_test,davidlt/root,sirinath/root,mattkretz/root,esakellari/root,satyarth934/root,omazapa/root-old,abhinavmoudgil95/root,bbockelm/root,arch1tect0r/root,lgiommi/root,gganis/root,evgeny-boger/root,lgiommi/root,vukasinmilosevic/root,sirinath/root,sbinet/cxx-root,mkret2/root,lgiommi/root,simonpf/root,gbitzes/root,Duraznos/root,mhuwiler/rootauto,krafczyk/root,mkret2/root,jrtomps/root,zzxuanyuan/root-compressor-dummy,simonpf/root,BerserkerTroll/root,mattkretz/root,buuck/root,sirinath/root,davidlt/root,root-mirror/root,pspe/root,mkret2/root,perovic/root,beniz/root,Y--/root,satyarth934/root,sawenzel/root,dfunke/root,evgeny-boger/root,bbockelm/root,nilqed/root,pspe/root,root-mirror/root,esakellari/root,mattkretz/root,bbockelm/root,arch1tect0r/root,sirinath/root,mkret2/root,Y--/root,gbitzes/root,olifre/root,mattkretz/root,buuck/root,mkret2/root,abhinavmoudgil95/root,esakellari/my_root_for_test,vukasinmilosevic/root,esakellari/root,buuck/root,mkret2/root,bbockelm/root,dfunke/root,sbinet/cxx-root,Y--/root,sawenzel/root,simonpf/root,esakellari/my_root_for_test,pspe/root,esakellari/root,veprbl/root,beniz/root,nilqed/root,omazapa/root,omazapa/root-old,georgtroska/root,davidlt/root,perovic/root,olifre/root,davidlt/root,Duraznos/root,olifre/root,BerserkerTroll/root,Duraznos/root,nilqed/root,gganis/root,veprbl/root,pspe/root,simonpf/root,esakellari/root,omazapa/root-old,zzxuanyuan/root-compressor-dummy,georgtroska/root,Duraznos/root,perovic/root,root-mirror/root,BerserkerTroll/root,agarciamontoro/root,lgiommi/root,BerserkerTroll/root,evgeny-boger/root,vukasinmilosevic/root,gganis/root,esakellari/my_root_for_test,krafczyk/root,omazapa/root-old,mattkretz/root,abhinavmoudgil95/root,gbitzes/root,buuck/root,karies/root,perovic/root,root-mirror/root,CristinaCristescu/root,krafczyk/root,lgiommi/root,gganis/root,beniz/root,mhuwiler/rootauto,davidlt/root,vukasinmilosevic/root,vukasinmilosevic/root,sbinet/cxx-root,zzxuanyuan/root,dfunke/root,davidlt/root,krafczyk/root,krafczyk/root,veprbl/root,bbockelm/root,olifre/root,vukasinmilosevic/root,buuck/root,bbockelm/root,sbinet/cxx-root,olifre/root,omazapa/root-old,pspe/root,karies/root,karies/root,evgeny-boger/root,omazapa/root-old,CristinaCristescu/root,zzxuanyuan/root,omazapa/root,Y--/root,omazapa/root,sbinet/cxx-root,veprbl/root,omazapa/root,georgtroska/root,veprbl/root,mattkretz/root,esakellari/my_root_for_test,georgtroska/root,veprbl/root,evgeny-boger/root,olifre/root,satyarth934/root,BerserkerTroll/root,evgeny-boger/root,zzxuanyuan/root,karies/root,arch1tect0r/root,pspe/root,omazapa/root-old,perovic/root,perovic/root,thomaskeck/root,zzxuanyuan/root,olifre/root,thomaskeck/root,BerserkerTroll/root,nilqed/root,Y--/root,sawenzel/root,karies/root,abhinavmoudgil95/root,sirinath/root,simonpf/root,agarciamontoro/root,mkret2/root,abhinavmoudgil95/root,veprbl/root,beniz/root,vukasinmilosevic/root,CristinaCristescu/root,simonpf/root,root-mirror/root,omazapa/root,zzxuanyuan/root-compressor-dummy,perovic/root,mkret2/root,mattkretz/root,mkret2/root,krafczyk/root,gbitzes/root,sawenzel/root,satyarth934/root,zzxuanyuan/root,sbinet/cxx-root,zzxuanyuan/root,agarciamontoro/root,karies/root,satyarth934/root,buuck/root,BerserkerTroll/root,pspe/root,thomaskeck/root,esakellari/root,perovic/root,omazapa/root,zzxuanyuan/root-compressor-dummy,jrtomps/root,zzxuanyuan/root,krafczyk/root,agarciamontoro/root,jrtomps/root,omazapa/root,mkret2/root,georgtroska/root,zzxuanyuan/root-compressor-dummy,abhinavmoudgil95/root,gbitzes/root,evgeny-boger/root,esakellari/my_root_for_test,gbitzes/root,arch1tect0r/root,davidlt/root,omazapa/root,esakellari/my_root_for_test,krafczyk/root,abhinavmoudgil95/root,zzxuanyuan/root,zzxuanyuan/root,simonpf/root,evgeny-boger/root,BerserkerTroll/root,olifre/root,gganis/root,sawenzel/root,Duraznos/root,Y--/root,bbockelm/root,buuck/root,gganis/root,buuck/root,nilqed/root,sbinet/cxx-root,Y--/root,thomaskeck/root,omazapa/root-old,mkret2/root,gganis/root,gbitzes/root,CristinaCristescu/root,georgtroska/root,sbinet/cxx-root,omazapa/root,dfunke/root,omazapa/root-old,zzxuanyuan/root-compressor-dummy,agarciamontoro/root,arch1tect0r/root,BerserkerTroll/root,Y--/root,olifre/root,mhuwiler/rootauto,Duraznos/root,CristinaCristescu/root,simonpf/root,georgtroska/root,davidlt/root,esakellari/root,evgeny-boger/root,buuck/root,sawenzel/root,mattkretz/root,Duraznos/root,dfunke/root,simonpf/root,sirinath/root,zzxuanyuan/root-compressor-dummy,satyarth934/root,evgeny-boger/root,georgtroska/root,arch1tect0r/root,sawenzel/root,georgtroska/root,perovic/root,thomaskeck/root,esakellari/root,arch1tect0r/root,pspe/root,root-mirror/root,sbinet/cxx-root