strange bug after fork switch
Merge branch 'master' of https://github.com/immefrank/RCS421

Conflicts:
	Yalnix/free_frame_linked_list.c
	Yalnix/free_frame_linked_list.o
	Yalnix/interrupt_handler.o
	Yalnix/kernel_call.o
	Yalnix/load.o
	Yalnix/queue.o
	Yalnix/yalnix.o