Re: RFA: Remove unused support for target-based exception handling

[Jim Blandy <jimb@codesourcery.com>]

I've committed this.

2007-12-12  Jim Blandy  <jimb@codesourcery.com>

	Remove unused support for target-based exception catching.
	* target.h (struct target_ops): Delete
	to_enable_exception_callback and to_get_current_exception_event
	members.
	(target_enable_exception_callback)
	(target_get_current_exception_event): Delete macros.
	* target.c (update_current_target): Remove code to inherit and
	default those members.
	(debug_to_enable_exception_callback)
	(debug_to_get_current_exception_event): Delete functions.
	(setup_target_debug): Don't install those methods.
	* inf-child.c (inf_child_enable_exception_callback)
	(inf_child_get_current_exception_event): Delete dummy functions.
	(inf_child_target): Don't install them in the target vector.
	* breakpoint.h (enum bptype): Delete bp_catch_catch,
	bp_catch_throw.
	* breakpoint.c (cover_target_enable_exception_callback)
	(ep_is_exception_catchpoint, create_exception_catchpoint): Delete
	functions.
	(insert_bp_location, update_breakpoints_after_exec)
	(remove_breakpoint, ep_is_catchpoint, print_it_typical)
	(bpstat_stop_status, bpstat_what)
	(bpstat_get_triggered_catchpoints, print_one_breakpoint_location)
	(user_settable_breakpoint, allocate_bp_location)
	(disable_watchpoints_before_interactive_call_start)
	(enable_watchpoints_after_interactive_call_stop, mention)
	(delete_breakpoint, breakpoint_re_set_one, disable_command)
	(enable_command): Remove exception catchpoint cases.
	(catch_exception_command_1): Don't try target-based exception
	handling.
	* stack.c (catch_info): Call print_frame_label_vars
	unconditionally.