Lines of dumpon.init from check-in 5062c9b6fc that are changed by the sequence of edits moving toward check-in 8f80b79392:

                         1: # vim:ft=make:
                         2: 
                         3: DUMPDEV?=no
                         4: 
                         5: dumpon: random
                         6: .if empty(${DUMPDEV:tl:Mno})
                         7: 	: Setting dumpon device.
5062c9b6fc 2019-10-19    8: 	dumpon -v ${DUMPDEV}
                         9: .endif