gdb:

* tui/tui-hooks.c: Include observer.h.
	(tui_event_default, tui_old_event_hooks, tui_event_hooks):
	Remove.
	(tui_bp_created_observer, tui_bp_deleted_observer,
	tui_bp_modified_observer): New globals.
	(tui_install_hooks): Use observers, not events.
	(tui_remove_hooks): Likewise.
	* mi/mi-cmd-break.c: Include observer.h, not gdb-events.h.
	(mi_breakpoint_observers_installed, mi_can_breakpoint_notify): New
	globals.
	(breakpoint_notify): Check mi_can_breakpoint_notify.
	(breakpoint_hooks): Remove.
	(mi_cmd_break_insert): Attach observers.  Don't use events.
	* tracepoint.c: Include observer.h, not gdb-events.h.
	(tracepoint_operation, trace_pass_command): Notify observer.
	* interps.c: Don't include gdb-events.h.
	(clear_interpreter_hooks): Don't call clear_gdb_event_hooks.
	* gdbarch.c: Rebuild.
	* gdbarch.sh: Emit include for observer.h, not gdb-events.h.
	(deprecated_current_gdbarch_select_hack): Notify observer.
	* breakpoint.h: Don't include gdb-events.h.
	* breakpoint.c: Don't include gdb-events.h.
	(condition_command): Notify observer.
	(commands_command): Likewise.
	(commands_from_control_command): Likewise.
	(mention, delete_breakpoint, set_ignore_count): Likewise.
	(disable_breakpoint, do_enable_breakpoint): Likewise.
	* Makefile.in (gdb_events_h): Remove.
	(breakpoint_h): Update.
	(COMMON_OBS): Remove gdb-events.o.
	(gdb-events.o): Remove.
	(breakpoint.o, gdbarch.o, interps.o, tracepoint.o, gdbtk-bp.o,
	gdbtk-hooks.o, mi-cmd-break.o, tui-hooks.o): Update.
	* gdb-events.c: Remove.
	* gdb-events.h: Remove.
	* gdb-events.sh: Remove.
gdb/doc:
	* observer.texi (GDB Observers): Document new observers:
	breakpoint_created, breakpoint_deleted, breakpoint_modified,
	tracepoint_created, tracepoint_deleted, tracepoint_modified,
	architecture_changed.
gdb/gdbtk:
	* generic/gdbtk-hooks.c: Include observer.h, not gdb-events.h.
	(gdbtk_add_hooks): Use observers, not events.
	(gdbtk_architecture_changed): Add argument, for observer.
	* generic/gdbtk-bp.c: Include observer.h.
	(gdb_set_bp): Notify observer.
	(gdb_set_bp_addr): Likewise.

gdb/doc/observer.texi

@@ -2,7 +2,7 @@
 
 @c This file is part of the GDB manual.
 @c
-@c Copyright (C) 2003, 2004, 2005, 2006
+@c Copyright (C) 2003, 2004, 2005, 2006, 2008
 @c               Free Software Foundation, Inc.
 @c
 @c See the file gdbint.texinfo for copying conditions.
@@ -139,3 +139,39 @@ The thread specified by @var{t} has exited.
 The target was resumed.  The @var{ptid} parameter specifies which
 thread was resume, and may be RESUME_ALL if all threads are resumed.
 @end deftypefun
+
+@deftypefun void breakpoint_created (int @var{bpnum})
+A new breakpoint has been created.  The argument @var{bpnum} is the
+number of the newly-created breakpoint.
+@end deftypefun
+
+@deftypefun void breakpoint_deleted (int @var{bpnum})
+A breakpoint has been destroyed.  The argument @var{bpnum} is the
+number of the newly-destroyed breakpoint.
+@end deftypefun
+
+@deftypefun void breakpoint_modified (int @var{bpnum})
+A breakpoint has been modified in some way.  The argument @var{bpnum}
+is the number of the modified breakpoint.
+@end deftypefun
+
+@deftypefun void tracepoint_created (int @var{tpnum})
+A new tracepoint has been created.  The argument @var{tpnum} is the
+number of the newly-created tracepoint.
+@end deftypefun
+
+@deftypefun void tracepoint_deleted (int @var{tpnum})
+A tracepoint has been destroyed.  The argument @var{tpnum} is the
+number of the newly-destroyed tracepoint.
+@end deftypefun
+
+@deftypefun void tracepoint_modified (int @var{tpnum})
+A tracepoint has been modified in some way.  The argument @var{tpnum}
+is the number of the modified tracepoint.
+@end deftypefun
+
+@deftypefun void architecture_changed (struct gdbarch *@var{newarch})
+The current architecture has changed.  The argument @var{newarch} is
+a pointer to the new architecture.
+@end deftypefun
+