From Dario Pellegrini: use $(PYTHON) instead of python.
From Dario Pellegrini: use $(PYTHON) instead of python.

Fixes building cling on ArchLinux; that stopped the building as python3 was called instead of python2.

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