Increase min id length to allow ids past 10k

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1624450 13f79535-47bb-0310-9956-ffa450edef68
Revert accidental commit of r1624450 (had a dirty workspace)

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1624451 13f79535-47bb-0310-9956-ffa450edef68
Increase min id length to allow ids past 10k

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1624452 13f79535-47bb-0310-9956-ffa450edef68