* tests/misc/readlink-fp-loop (symlink_loop_msg): New var,
which records the symlink-loop message, whose wording is
not standardized by Posix. Do not rely on "echo x > p/1"
to work when p/1 has a lot of indirect symlinks. (I'm surprised
that it works on Linux. Perhaps a Linux bug?)
* tests/misc/readlink-fp-loop: New file. Test for the readlink bug
fixed through today's change to Gnulib's canonicalize module.
* tests/misc/Makefile.am (TESTS): Add readlink-fp-loop.
Bug report and a test case from mpb.mail@gmail.com.