Replace U64_LITERAL with the standard UINT64_C

src/lib/cc/compat_compiler.h

src/lib/intmath/bits.c

src/lib/wallclock/tor_gettimeofday.c

src/or/config.c

src/or/config.h

src/or/confparse.c

src/or/dirauth/dirvote.c

src/or/policies.c

src/or/routerparse.c

src/test/test_bwmgt.c

src/test/test_channel.c

src/test/test_circuitmux.c

src/test/test_config.c

src/test/test_crypto.c

src/test/test_dir.c

src/test/test_mainloop.c

src/test/test_options.c

src/test/test_status.c

src/test/test_util.c

src/test/test_util_format.c