core version 2/3 added.
relavant makefiles modified for new core(s).
makefile changed for improved optimization options.
board_fignition added/updated.

Author: bsekisser <squirmyworms@embarqmail.com>

	modified:   Makefile.common
	new file:   examples/board_fignition/FIGsimavr.c
	new file:   examples/board_fignition/Makefile
	modified:   simavr/Makefile
	modified:   simavr/sim/sim_avr.c
	modified:   simavr/sim/sim_avr.h
	modified:   simavr/sim/sim_core.c
	modified:   simavr/sim/sim_core.h
	new file:   simavr/sim/sim_core_v2.c
	new file:   simavr/sim/sim_core_v2.h
	new file:   simavr/sim/sim_core_v2_flag_ops.h
	new file:   simavr/sim/sim_core_v2_inst_ops.h
	new file:   simavr/sim/sim_core_v2_mem_funcs.h
	new file:   simavr/sim/sim_core_v3.c
	new file:   simavr/sim/sim_core_v3.h
	new file:   simavr/sim/sim_core_v3_inst_ops.h
Merge branch 'master' of https://github.com/buserror-uk/simavr