LUCENE-5002: Fix Deadlock when IW#deleteAll() is called concurrently to a flushing DWPT

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1484734 13f79535-47bb-0310-9956-ffa450edef68
remove 2>&1 from filename

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1484740 13f79535-47bb-0310-9956-ffa450edef68
test logging: key by hashCode

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1484795 13f79535-47bb-0310-9956-ffa450edef68
SOLR-4842: merge from branch_4x

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1484884 13f79535-47bb-0310-9956-ffa450edef68
SOLR-4842: merge an additional test case from branch_4x

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1484889 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-4992: CustomScoreQuery does not work with arbitrary queries: scoringQueries must match every document

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1485040 13f79535-47bb-0310-9956-ffa450edef68
add a variant of testThreadInterruptDeadlock that uses 2 threads

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1485388 13f79535-47bb-0310-9956-ffa450edef68
SOLR-4849, test failures due to windows pathing issues

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1485403 13f79535-47bb-0310-9956-ffa450edef68