gdb/

gdb/
2012-02-15  Pedro Alves  <palves@redhat.com>

	* remote.c (remote_detach_1, extended_remote_attach_1): Tweak
	output to be like native targets'.
	(remote_pid_to_str): Special case the null ptid.

gdb/testsuite/
2012-02-15  Pedro Alves  <palves@redhat.com>

	Support extended-remote.  Avoid cascading timeouts.

	* gdb.base/attach.exp (do_attach_tests): Add expected output for
	the extended-remote target.  If attaching with no file fails, load
	the file manually.
	* gdb.server/ext-attach.exp: Adjust expected attach/detach output.