Merged revision(s) 1624141 from lucene/dev/branches/branch_4x:
LUCENE-5934: also check this IllegalStateException up higher so it will not cause corruption when IW kisses an index if it ever kicks in again (hopefully not!)

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene_solr_4_10@1624144 13f79535-47bb-0310-9956-ffa450edef68
Merged revision(s) 1624148 from lucene/dev/branches/branch_4x:
Merged revision(s) 1624146 from lucene/dev/trunk:
LUCENE-5934: Add Ian Lea to CHANGES.txt

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene_solr_4_10@1624149 13f79535-47bb-0310-9956-ffa450edef68
Merged revision(s) 1624153 from lucene/dev/branches/branch_4x:
Merged revision(s) 1624151 from lucene/dev/trunk:
Fix over-long CHANGES.txt line.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene_solr_4_10@1624154 13f79535-47bb-0310-9956-ffa450edef68