Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Make file name generation to work with both new and old versions of OpenSSL.

Sponsored by: The FreeBSD Foundation

Finish renaming fstest to pjdfstest.

Give fstest a more unique name: pjdfstest.
It is released from time to time and used outside FreeBSD, so it is good to
have a name one can google.

Allow to specify uid, gid and mode for create_file().

Move create_file() to misc.sh, as it is going to be used in more places.

Instead of hardcoding {NAME_MAX} as 255 and {PATH_MAX} as 1024 obtain those from
pathconf(2) and properly generate too long file names.
This should fix ENAMETOOLONG checks on Linux.

Small tweaks.

No need to use grep to check if path start with /.

Suggested by: ed

${GREP} can only be used after loading 'conf'.

Don't use egrep directly - use ${GREP}.

Check first todo() argument against operating system name and operating system
name plus file system name.

Be more Solaris-friendly.

Submitted by: Milan Cermak <Milan.Cermak@Sun.COM>

Include TODO messages even if tests succeeds, so we can detect when something
suddenly started to work.

fstest for Linux:
- Use /dev/urandom, it is more portable.
- Implement todo() function which allows to mark known failures.

IFp4: Regression tests for FreeBSD/ZFS chflags(2)/lchflags(2).

Improve output when a test fails.

Approved by: rwatson (mentor)

Add 3436 file system regression tests in 184 files.
Almost all regression tests are based on very flexible fstest tool.
They verify correctness (POSIX conformance) of almost all file
system-related system calls.

The motivation behind this work is my ZFS port and POSIX, who doesn't
provide free test suites.

Runs on: FreeBSD/UFS, FreeBSD/ZFS, Solaris/UFS, Solaris/ZFS

To try it out:

# cd fstest
# make
# find tests/* -type d | xargs prove