added object files

	modified:   bin/bfdrwa
	modified:   bin/bfrwa
	modified:   bin/ffdrwa
	modified:   bin/ffrwa
	modified:   obj/bf.o
	modified:   obj/bfd.o
	modified:   obj/ff.o
replace Popen with call
modified skorin heuristics files
removed unnecessary files
removed gen.py and test