fix for macosx and try to optimize when to trigger a recompile by comparing if anything changed compared to previous version. But since a lot of Makefile.ARCH is used this does not help too much.
fix for macosx and try to optimize when to trigger a recompile by comparing
if anything changed compared to previous version. But since a lot of
Makefile.ARCH is used this does not help too much.


git-svn-id: acec3fd5b7ea1eb9e79d6329d318e8118ee2e14f@20684 27541ba8-7e3a-0410-8455-c3a389f83636

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