Merged revision(s) 1624095 from lucene/dev/trunk:
Make "ant validate" also check svn working copy (we removed this check, because we wanted to be compatible with GIT checkouts or newer subversion repos). But we ignore those checks automatically, if its not a supported subversion.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1624096 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5098: fix eol-style

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1624098 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5863: add old indexes. anything before 2.4 is dark ages and tests wont even compile, even if you hack build with ancient junit and use ancient ant...

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1624099 13f79535-47bb-0310-9956-ffa450edef68
Revert 1624096: The check is already done by precommit, I missed this!


git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1624102 13f79535-47bb-0310-9956-ffa450edef68