Add missing TMath::Power overload
Add missing TMath::Power overload

(still trying to get TTreeFormula to work on all platform)

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