Fix a copyright notice from rra-c-util imports

Change-Id: I77e6addbfe821e39c1773844fd8360c7f70cfccc
Reviewed-on: https://gerrit.stanford.edu/1269
Reviewed-by: Russ Allbery <rra@stanford.edu>
Tested-by: Russ Allbery <rra@stanford.edu>
Release 3.6

Change-Id: Ib977f03f783dc229c5ee1a8c0c9471c042918909
Reviewed-on: https://gerrit.stanford.edu/1270
Tested-by: Russ Allbery <rra@stanford.edu>
Reviewed-by: Russ Allbery <rra@stanford.edu>