Notes:

PAO-960731 has some problems on 2.1.5-RELEASE (because it's the first
release of PAO for 2.1.5-RELEASE).  I fixed these problems.
PAO-960812 is only for 2.1.5-RELEASE.  Now I'm porting PAO to the
latest 2.2-SNAP (960801).

Tatsumi Hosokawa <hosokaw@jp.FreeBSD.org>
