* core: Lubos Pekny found that -jtag sometimes used the wrong mcu

register.
    * core: Bernard Mentink wrote a Atmega128 device file, Thanks alot.
    * core: Atmega88 & Atmega168 work too.
    * core: Fixed regression for atmega128.
    * core: Moved serial interface words to application dictionary (not
every amforth installation may have a serial terminal).
    * library: Updated assembler from Lubos Pekny.
    * examples: sieve benchmark, optimized for 1K RAM.