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When trying to write a file which has size multiple of
block_size, the last write would try to write 0 bytes
which caused the ICDI firmware to hang. Now checking and
skipping if that's the case.

Verification was broken since #8aea8 because comparison was
not taking into account the first + in the packet. Also
verification errors were not returning for the caller.

On some machines, some usb responses would be broken
into more that two bulk_requests. Now the reception
of the whole response in handled in a single call to
wait_response.

project0.bin was built using stellarisware. There can be some
infrigement on the stellarisware license. Instructions on how
to build are already clear on the README.

The new main function just handles argument processing and calls
flasher_flash()

This function, given all arguments, simply flashes the image

This function simply shows the command line arguments

This function finds the USB device with USB vendor/product IDs.
Multiple identical products can be differentiated with the serial
number, if needed.

The matching device, if unique, is referenced and returned.

This error code captures higher-level errors than what libusb returns
alone. It also has a dedicated code for libusb errors.

Otherwise include paths aren't neccessarily found by the compiler.

Fix link error