py/obj.h: Use uint64_t instead of mp_int_t in repr-D MP_OBJ_IS_x macros.
py/obj.h: Use uint64_t instead of mp_int_t in repr-D MP_OBJ_IS_x macros.

This follows how it's already done in MP_OBJ_IS_OBJ: the objects are
considered 64-bit unsigned ints for the purpose of bitwise manipulation.

trezor/micropython,henriknelson/micropython,selste/micropython,selste/micropython,trezor/micropython,MrSurly/micropython,pfalcon/micropython,kerneltask/micropython,henriknelson/micropython,adafruit/circuitpython,adafruit/circuitpython,kerneltask/micropython,pozetroninc/micropython,selste/micropython,pfalcon/micropython,selste/micropython,tobbad/micropython,pramasoul/micropython,selste/micropython,MrSurly/micropython,bvernoux/micropython,trezor/micropython,pfalcon/micropython,kerneltask/micropython,kerneltask/micropython,trezor/micropython,MrSurly/micropython,tobbad/micropython,pramasoul/micropython,henriknelson/micropython,pozetroninc/micropython,tobbad/micropython,pozetroninc/micropython,bvernoux/micropython,pfalcon/micropython,adafruit/circuitpython,tobbad/micropython,trezor/micropython,pfalcon/micropython,bvernoux/micropython,tobbad/micropython,adafruit/circuitpython,MrSurly/micropython,kerneltask/micropython,adafruit/circuitpython,pozetroninc/micropython,bvernoux/micropython,pramasoul/micropython,pramasoul/micropython,pozetroninc/micropython,MrSurly/micropython,bvernoux/micropython,pramasoul/micropython,adafruit/circuitpython,henriknelson/micropython,henriknelson/micropython