Make the use of coverage.files more uniform
Make the use of coverage.files more uniform

hugovk/coveragepy,blueyed/coveragepy,hugovk/coveragepy,blueyed/coveragepy,blueyed/coveragepy,nedbat/coveragepy,nedbat/coveragepy,nedbat/coveragepy,nedbat/coveragepy,hugovk/coveragepy,hugovk/coveragepy,nedbat/coveragepy,blueyed/coveragepy,hugovk/coveragepy,blueyed/coveragepy