* nto-tdep.c (nto_thread_state_str): New array.

	* nto-tdep.c (nto_thread_state_str): New array.
	(nto_extra_thread_info): New function definition.
	* nto-tdep.h (gdbthread.h): New include.
	(private_thread_info): New struct.
	(nto_extra_thread_info): New declaration.
	* nto-procfs.c (procfs_thread_alive): Properly check if
	thread is still alive.
	(update_thread_private_data_name, update_thread_private_data): New
	function definition.
	(procfs_find_new_threads): Fetch thread private data.
	(init_procfs_ops): Register to_extra_thread_info.