Make JSON logging functions opt-in/out using #ifdef
Make JSON logging functions opt-in/out using #ifdef

eunsungc/gt6-RAMSES_8_5,eunsungc/gt6-RAMSES_8_5,eunsungc/gt6-RAMSES_8_5,eunsungc/gt6-RAMSES_8_5,eunsungc/gt6-RAMSES_8_5,eunsungc/gt6-RAMSES_8_5