PWGGA: Add gamma cut options
PWGGA: Add gamma cut options

amaringarcia/AliPhysics,nschmidtALICE/AliPhysics,adriansev/AliPhysics,alisw/AliPhysics,rihanphys/AliPhysics,AMechler/AliPhysics,fcolamar/AliPhysics,lcunquei/AliPhysics,fbellini/AliPhysics,mpuccio/AliPhysics,fcolamar/AliPhysics,pchrista/AliPhysics,victor-gonzalez/AliPhysics,lcunquei/AliPhysics,amaringarcia/AliPhysics,fbellini/AliPhysics,hzanoli/AliPhysics,SHornung1/AliPhysics,mpuccio/AliPhysics,nschmidtALICE/AliPhysics,fcolamar/AliPhysics,alisw/AliPhysics,amaringarcia/AliPhysics,pchrista/AliPhysics,nschmidtALICE/AliPhysics,rihanphys/AliPhysics,mpuccio/AliPhysics,victor-gonzalez/AliPhysics,adriansev/AliPhysics,victor-gonzalez/AliPhysics,rbailhac/AliPhysics,adriansev/AliPhysics,hzanoli/AliPhysics,adriansev/AliPhysics,rihanphys/AliPhysics,fcolamar/AliPhysics,rihanphys/AliPhysics,amaringarcia/AliPhysics,alisw/AliPhysics,SHornung1/AliPhysics,rbailhac/AliPhysics,victor-gonzalez/AliPhysics,rbailhac/AliPhysics,SHornung1/AliPhysics,nschmidtALICE/AliPhysics,pchrista/AliPhysics,hzanoli/AliPhysics,rbailhac/AliPhysics,rihanphys/AliPhysics,mpuccio/AliPhysics,victor-gonzalez/AliPhysics,mpuccio/AliPhysics,fbellini/AliPhysics,fcolamar/AliPhysics,adriansev/AliPhysics,hzanoli/AliPhysics,amaringarcia/AliPhysics,rbailhac/AliPhysics,alisw/AliPhysics,victor-gonzalez/AliPhysics,hzanoli/AliPhysics,lcunquei/AliPhysics,alisw/AliPhysics,rihanphys/AliPhysics,rbailhac/AliPhysics,SHornung1/AliPhysics,hzanoli/AliPhysics,lcunquei/AliPhysics,AMechler/AliPhysics,pchrista/AliPhysics,nschmidtALICE/AliPhysics,fbellini/AliPhysics,alisw/AliPhysics,mpuccio/AliPhysics,AMechler/AliPhysics,fbellini/AliPhysics,mpuccio/AliPhysics,AMechler/AliPhysics,victor-gonzalez/AliPhysics,SHornung1/AliPhysics,hzanoli/AliPhysics,lcunquei/AliPhysics,nschmidtALICE/AliPhysics,lcunquei/AliPhysics,AMechler/AliPhysics,rbailhac/AliPhysics,AMechler/AliPhysics,lcunquei/AliPhysics,pchrista/AliPhysics,amaringarcia/AliPhysics,fcolamar/AliPhysics,adriansev/AliPhysics,pchrista/AliPhysics,alisw/AliPhysics,SHornung1/AliPhysics,rihanphys/AliPhysics,amaringarcia/AliPhysics,AMechler/AliPhysics,fbellini/AliPhysics,fbellini/AliPhysics,nschmidtALICE/AliPhysics,adriansev/AliPhysics,pchrista/AliPhysics,SHornung1/AliPhysics,fcolamar/AliPhysics