* frame.h (selected_frame_level): Document as deprecated.

* frame.h (selected_frame_level): Document as deprecated.
(frame_relative_level): Declare.
* stack.c (frame_relative_level): New function.
(selected_frame_level): Document as deprecated.
(select_frame): Do not set the selected_frame_level.

* stack.c (frame_info, record_selected_frame): Update.
(frame_command, current_frame_command): Update.
(up_silently_base, up_command, down_silently_base): Update.
(down_command): Update.
* inflow.c (kill_command): Update.
* tracepoint.c (finish_tfind_command): Update.
* corelow.c (core_open): Update.
* thread.c (info_threads_command): Update.
(do_captured_thread_select): Update.
* infcmd.c (finish_command): Update.
* breakpoint.c (insert_breakpoints, do_enable_breakpoint): Update.