Explained target all.
Added burn-fuse and gccversion to the PHONY rule.

This ensures we always execute these rules even if there are files with
these names.
Listed the source files for the .o files in the comments.
Explained how the data in .xbm images is used.
removed obsolete comment
Make the image size static const.

It is not used outside the file, so it can be static. It is also never
changed, so we make it const to help the compiler optimize it.
Spread a bit more static love.
Moved redundant definitions into its own header file.
Keep the image in the ROM instead of loading it to RAM.

Create .xbm.c from .xbm to change the data type to const and add
the PROGMEM attribute.
Program to convert B8 to xbm.
Readded DELAY to make it work for damn slow adapters.

Still works for Bus 003 Device 002: ID 0403:6001 Future Technology
Devices International, Ltd FT232 USB-Serial (UART) IC without DELAY.