Broken, but working, ptregs system call conversion for x86-64

arch/x86/entry/common.c

arch/x86/entry/syscall_32.c

arch/x86/entry/syscall_64.c

arch/x86/entry/syscalls/syscall_32.tbl

arch/x86/entry/syscalls/syscall_64.tbl

arch/x86/include/asm/syscall.h

arch/x86/kernel/ioport.c

arch/x86/kernel/signal.c

fs/open.c

include/linux/compat.h

include/linux/syscalls.h

kernel/sched/core.c

kernel/signal.c

kernel/sys_ni.c