infrun.c:handle_signal_stop: Move initial connection/attachment handling code earlier.

infrun.c:handle_signal_stop: Move initial connection/attachment handling code earlier.

Before all this stop_soon handling, we have code that can end in
keep_going.  Particularly, the thread_hop_needed code looked
suspicious considering breakpoint always-inserted mode, though on
closer inspection, it'd take connecting to multiple remote targets
that shared the same address space to trigger that.

Still, I think it's clearer if all this remote connection setup /
attach code is placed early, before any keep_going path could be
reached.

gdb/
2013-11-14  Pedro Alves  <palves@redhat.com>

	* infrun.c (handle_signal_stop): Move STOP_QUIETLY,
	STOP_QUIETLY_REMOTE and 'stop_after_trap' handling earlier.