SOLR-5253, rearrange example schema to make it more difficult to remove _version_ and other reserved fields by mistake

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1529621 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5253, rearrange example schema to make it more difficult to remove _version_ and other reserved fields by mistake

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1529638 13f79535-47bb-0310-9956-ffa450edef68
add test case

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1529642 13f79535-47bb-0310-9956-ffa450edef68
remove bogus comment

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1529647 13f79535-47bb-0310-9956-ffa450edef68
assert the IOE is correctcheck

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1529650 13f79535-47bb-0310-9956-ffa450edef68
remove unused var

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1529653 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5258: add distance function to expressions/

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1529679 13f79535-47bb-0310-9956-ffa450edef68