IWAMOTO Toshihiro's test program submitted with PR #9994, modified to
perform the same operations on a control file, presumably held in a
known-working filesystem. Test and control files are compared with "diff"
after the run (assuming that the kernel does not panic, which is really
the main point of the test).
Not included in the parent Makefile's list, as it requires the existence of
an LFS of some size.
479f3c7ea7