Merge: tests: detect and use portable time and date command
authorJean Privat <jean@pryen.org>
Fri, 10 Oct 2014 13:08:31 +0000 (09:08 -0400)
committerJean Privat <jean@pryen.org>
Fri, 10 Oct 2014 13:08:31 +0000 (09:08 -0400)
Advanced behavior of `time` and `date` is not protable. Thus try
to detect known working configurations and use them.

time and date are not fundamental for tests, so having
an unsupported implementation is not a big deal.

Pull-Request: #814
Reviewed-by: Alexandre Terrasa <alexandre@moz-code.org>


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