[src/matt-nb4-arm]: src Closing old heads

[srcmastr <srcmastr%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/c1223b0dcbe0
branches:  matt-nb4-arm
changeset: 931938:c1223b0dcbe0
user:      srcmastr <srcmastr%NetBSD.org@localhost>
date:      Fri May 01 04:03:00 2020 +0000

description:
Closing old heads