LUCENE-4976: fix Solr IndexDeletionPolicy impls to handle empty commits onInit

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1478855 13f79535-47bb-0310-9956-ffa450edef68
Fix compiler warning and avoid useless assignation to local variable.


git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1478870 13f79535-47bb-0310-9956-ffa450edef68
SOLR-4616: Add Changes.txt entry


git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1478944 13f79535-47bb-0310-9956-ffa450edef68
SOLR-4784: Make class LuceneQParser public

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1479055 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-4963: Deprecate broken TokenFilter options.


git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1479148 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-4963: Completely remove deprecated options in 5.0.


git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1479171 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-4976: add missing sync / delete old save files

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1479394 13f79535-47bb-0310-9956-ffa450edef68
switch to using KEYS file instead of lucene-version.zip.asc to determine whether a release exists

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1479471 13f79535-47bb-0310-9956-ffa450edef68
SOLR-3240: add "spellcheck.collateMaxCollectDocs" for estimating collation hit-counts.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1479638 13f79535-47bb-0310-9956-ffa450edef68
SOLR-3240: add "spellcheck.collateMaxCollectDocs" (removing dead code).

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1479645 13f79535-47bb-0310-9956-ffa450edef68