* linux-nat.c (TRAP_IS_SYSCALL, TRAP_REMOVE_SYSCALL_FLAG): Delete.

	* linux-nat.c (TRAP_IS_SYSCALL, TRAP_REMOVE_SYSCALL_FLAG): Delete.
	(SYSCALL_SIGTRAP): New.
	(status_to_str): Adjust.
	(get_pending_status): Pending events in lp->waitstatus don't map
	to any signal.  Simplify.
	(linux_handle_syscall_trap): New.
	(linux_handle_extended_wait): When handling PTRACE_EVENT_CLONE
	events, use linux_ops->to_resume instead of direct ptrace with
	PTRACE_CONT.  Remove all TRAP_IS_SYSCALL handling.
	(wait_lwp): Handle syscall traps with linux_handle_syscall_trap,
	and clear the sysgood bit.
	(status_callback): Make it clearer and add comments.
	(cancel_breakpoints_callback): Ignore if LP has waitstatus set.
	(linux_nat_filter_event): Handle syscall traps with
	linux_handle_syscall_trap, and clear the sysgood bit.  Move the
	check for storing siginfo to after handling extended statuses and
	syscall traps.  Store status in the lwp object.
	(linux_wait_1): Don't swap the pending status out of the lwp
	object until after deciding we found an lwp with an interesting
	event.  Requeue a new pending signal if we find one while getting
	rid or a pending SIGSTOP we sent ourselves.  Don't clear the
	sysgood bit here.

	* infrun.c (deal_with_syscall_event): Rename to ...
	(handle_syscall_event): ... this.  Always context switch and set
	stop_pc, even if not catching the syscall.  If not catching the
	syscall, always resume with keep_going.
	(handle_inferior_event): Adjust.