* Work around Solaris' /bin/sh not being POSIX.
If /usr/xpg4/bin/sh is present, we are (definitely?) on Solaris or
a derivative, and /bin/sh cannot be trusted to support POSIX, but
/usr/xpg4/bin/sh can be. Exec it right away.
* Work around Solaris 'which' command oddity.
Solaris' (at least) 'which' command outputs not-found errors to STDOUT
instead of STDERR.
This makes "did we get any output from which" checks insufficient;
piping to grep -v the "no foo in ..." message should work.
Note that this patch set includes all such uses of which that I could
find, including ones that should never be reached on Solaris (i.e. only
executed on some other OS) just for consistency.
* Improved alternate-sh exec to avoid looping.
* Solaris' /usr/ucb/echo supports -n.
* Check for the best hash type that openssl supports.
When using openssl to generate hashes, do not assume it supports
sha256; try that, then sha1, then give up and use md5.
* Solaris does not support sed -i; use a tempfile.
* Use the full path for modinfo.
When running as non-root, /usr/sbin/ might not be in PATH.
include/tests_accounting already calls modinfo by full path, but
include/tests_kernel did not.
* Solaris find does not support -maxdepth.
This mirrors the logic already in tests_homedirs.
* Use PSBINARY instead of ps.
* Work around Solaris' date not supporting +%s.
Printing nawk's srand value is a bizarre but apparently once popular
workaround for there being no normal userland command to print
UNIX epoch seconds. A perl one-liner is the other common approach,
but nawk may be more reliably present on Solaris than perl.
* Revert to using sha1 for HOSTID.
* Whitespace cleanup for openssl hash tests.