LUCENE-3439: catch more cases where IW/IR is used after close; fix sneaky bug where IW can delete files after it was closed

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1173720 13f79535-47bb-0310-9956-ffa450edef68
11 files changed
tree: f52a9b1598d9d3e13423c07ef163db9088687ddf
  1. dev-tools/
  2. lucene/
  3. modules/
  4. solr/
  5. .gitignore
  6. .hgignore
  7. build.xml
  8. README.txt