LUCENE-5611: don't abort segment if term vector settings are wrong

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1591700 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5611: nuke dup buggy test

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1591701 13f79535-47bb-0310-9956-ffa450edef68