Take into account trunk versions of clang
Take into account trunk versions of clang

for example which output with clang --version something like
 Ubuntu clang version 3.5-1~exp1 (trunk) (based on LLVM 3.5)
 Target: x86_64-pc-linux-gnu
 Thread model: posix

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