Origin for each line in boinc-client.service.mk from check-in 8f163fdf5e:

bd31af2533 2020-04-10        arcade: DAEMON_boinc-client_COMMAND?=/usr/local/bin/boinc_client
bd31af2533 2020-04-10        arcade: DAEMON_boinc-client_FLAGS?=--redirectio   --dir /var/db/boinc
bd31af2533 2020-04-10        arcade: DAEMON_boinc-client_BACKGROUND?=-daemon
bd31af2533 2020-04-10        arcade: DAEMON_boinc-client_USER?=boinc