sim_fast_core: initial commit.

	modified:   sim/run_avr.c
	new file:   sim/sim_fast_core.c
	new file:   sim/sim_fast_core.h
	new file:   sim/sim_fast_core_profiler.c
	new file:   sim/sim_fast_core_profiler.h
Merge branch 'sim-fast-core' of https://github.com/bsekisser/simavr into fast-core

initial commit for push of sim-fast-core into upstream

Conflicts:
	simavr/sim/sim_fast_core.c

	modified:   run_avr.c
	modified:   sim_fast_core.c
	new file:   sim_fast_core.h
	new file:   sim_fast_core_profiler.c
	new file:   sim_fast_core_profiler.h