For make universe, in addition to make.conf, also ignore a src.conf with possibe non-default options.
For make universe, in addition to make.conf, also ignore a
src.conf with possibe non-default options.

Reviewed by:	ru
MFC after:	10 days

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase