* linux-thread-db.c (td_thr_getfpregs_p, td_thr_getgregs_p)

	* linux-thread-db.c (td_thr_getfpregs_p, td_thr_getgregs_p)
	(td_thr_setfpregs_p, td_thr_setgregs_p, thread_db_get_info)
	(thread_db_fetch_registers, thread_db_store_registers)
	(thread_db_thread_alive, thread_db_state_str): Delete.
	(thread_db_load): Don't look up regset functions.
	(thread_db_pid_to_str): Simplify.
	(thread_db_extra_thread_info): New.
	(init_thread_db_ops): Do not set to_fetch_registers,
	to_store_registers, or to_thread_alive.  Set to_extra_thread_info.
	* Makefile.in: Remove linux-thread-db.o rule.