Erik:
Please review this build reliability fix. In JDK-8065138, we would
have caught the error much faster if the build had failed instead of
silently generating bad output. To avoid this in the future, this
patch activates pipefail and errexit in the shell, when available.
This means that long command lines, consisting of multiple commands,
chained together either by pipes or ';', will fail the build
regardless of which of the sub commands that failed. Currently, all
but the last command would be ignored.
Since these features my not always be available in all versions of
bash, I added a check to configure for each of them and only enable
them if they are available. I also had to fix some instances where we
have 'grep' and 'find' returning non zero without it being an error.
Thanks to Martin who suggested this in the first place.
Bug: https://bugs.openjdk.java.net/browse/JDK-8065576
Webrev: http://cr.openjdk.java.net/~erikj/8065576/webrev.root.01
Looks good to me.
Tim
