slogging on through test failures

[John Sichi <js...@fb.com>]

I just committed Carl's patch for HIVE-1970.  This will cause ant test to continue on through all subdirs even if tests for one fail.

The plus is that this allows you to see all test failures at once instead of seeing a known failure in one subdir and forgetting about the fact that the subsequent ones may also have new failures.

The minus is that you may see some spurious failures from tests whose setup encounters a problem left behind by a previous failure.  (But this is already the case within one subdir, so it's not really new.)

You can get the old behavior back with -Dtest.continue.on.failure=false

JVS