How to static build for Windows, and remove libusb lib

[Droid-MAX]

conflicting types for 'ssize_t'

it failed when I static compile on my zeropi.

[Droid-MAX]

just replace 'ssize_t' to 'ssize', solved!

sed -i "s/ssize_t/ssize/g" core.c spi-mem.c spi-mem.h spi-mem-serprog.c