replace all but the last '.' in a sequence name with underscores to help avoid mafjoin debugging pain in the future
replace all but the last '.' in a sequence name with underscores to
help avoid mafjoin debugging pain in the future

Change-Id: I31332c01ebb1deb3fe22fb567d393f560fa8ff30

benedictpaten/cactus,benedictpaten/cactus,benedictpaten/cactus,benedictpaten/cactus,benedictpaten/cactus