gdb/doc:

gdb/doc:
2012-09-21  Yao Qi  <yao@codesourcery.com>
	    Pedro Alves  <palves@redhat.com>

	* gdb.texinfo (GDB/MI Async Records): Document notification
	'record-started' and 'record-stopped'.
	* observer.texi (GDB Observers): New observer 'record-changed'.
gdb:
2012-09-21  Yao Qi  <yao@codesourcery.com>

	* mi/mi-interp.c: Declare mi_record_changed.
	(mi_interpreter_init): Call observer_attach_record_changed.
	(mi_record_changed): New.
	* record.c (record_open): Call observer_notify_record_changed.
	(cmd_record_stop): Call observer_notify_record_changed.
	* NEWS: Mention it.

gdb/testsuite:
2012-09-21  Yao Qi  <yao@codesourcery.com>

	* gdb.mi/mi-record-changed.exp: New.
	* gdb.mi/mi-reverse.exp: Adjust expected output.