Call date with -d since it's more portable than --date.

Signed-off-by: Thomas Klausner <wiz@NetBSD.org>
[rlb@defaultvalue.org: adjust commit message.]
Reviewed-by: Rob Browning <rlb@defaultvalue.org>
test-meta.sh: prefer the more portable test '=' to '=='.

Signed-off-by: Thomas Klausner <wiz@NetBSD.org>
[rlb@defaultvalue.org: adjust commit message.]
Reviewed-by: Rob Browning <rlb@defaultvalue.org>
test.sh: remove "wc -l" quoting until/unless we fix the broader issue.

On some platforms "wc -l" returns whitespace along with the count,
which breaks the one case where we quoted the result, i.e. "$(... | wc
-l").  For now, remove the quoting until/unless we decide to fix all
of the affected invocations.

Thanks to Thomas Klausner <tk@giga.or.at> for reporting the problem.

Signed-off-by: Rob Browning <rlb@defaultvalue.org>