src commit bits were taken in for:

benl Ben Laurie
jhay John Hay
raj Rafal Jaworowski
ups Stephan Uphoff
wkoszek Wojciech Koszek

None of these people have any other commit bits so add them to the
Committer Emeritus page.

Approved by: bcr
Differential Revision: https://reviews.freebsd.org/D9375