windows/Makefile: Make use of CFLAGS_EXTRA, LDFLAGS_EXTRA and SRC_MOD.
windows/Makefile: Make use of CFLAGS_EXTRA, LDFLAGS_EXTRA and SRC_MOD.

To be consistent with the unix port.

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