SOLR-1301: Add a Solr contrib that allows for building Solr indexes via Hadoop's MapReduce.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1558520 13f79535-47bb-0310-9956-ffa450edef68
SOLR-1301: Ivy likes to act funny if you don't declare compile and test resources in the same dependency.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1558522 13f79535-47bb-0310-9956-ffa450edef68