log_flow() everywhere

src/66/66-boot.c

src/66/66-parser.c

src/66/66-scanctl.c

src/66/66-shutdown.c

src/66/66-shutdownd.c

src/66/66-tree.c

src/66/66-update.c

src/lib66/backup_cmd_switcher.c

src/lib66/backup_make_new.c

src/lib66/backup_realpath_sym.c

src/lib66/db_compile.c

src/lib66/db_find_compiled_state.c

src/lib66/db_ok.c

src/lib66/db_switch_to.c

src/lib66/db_update.c

src/lib66/hpr_shutdown.c

src/lib66/hpr_wall.c

src/lib66/parser.c

src/lib66/parser_utils.c

src/lib66/parser_write.c