This means that old `test` flags can be passed in to `new-test`, `new-build`, `new-install`,
`new-configure`, etc. These new flags are:

    * `--test-log` (see old `--log`)
    * `--test-machine-log` (see `--machine-log`)
    * `--test-show-details` (see `--show-details`)
    * `--test-keep-tix-files` (see `--keep-tix-files`)
    * `--test-options`
    * `--test-option`

This fixes #4803, #4643, #4766, and #5416.