Test build on Windows

[henrique-silva]

There should be some problems with the libraries and headers paths when compiling the firmware on Windows.

[paultech]

Builds fine under Windows with newest (9-2019-q4-major) GNU-Arm toolchain

[ 11%] Built target FreeRTOS
[ 42%] Built target lpcopen
[ 94%] Built target openMMC
[100%] Built target bootloader

build/out/bootloader.axf:                                                          ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), statically linked, not stripped
build/out/bootloader.bin:                                                          data
build/out/bootloader_pad.bin:                                                      data
build/out/openMMC.axf:                                                             ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), statically linked, not stripped
build/out/openMMC.bin:                                                             data
build/out/openMMC_full.bin:                                                        data 

[augustofg]

I don't think openMMC builds on Windows anymore (due some Unix commands necessary to generate the combined bootloader + application binary). If someone want to support building on other platforms, PRs are welcome.