LUCENE-2973: In the svn-export-source target, switched from <arg line="..."> argument specification to <arg value="...">, to avoid problems with argument splitting on space-containing paths.
LUCENE-2973: In the svn-export-source target, switched from <arg line="..."> argument specification to <arg value="...">, to avoid problems with argument splitting on space-containing paths.

git-svn-id: 308d55f399f3bd9aa0560a10e81a003040006c48@1084307 13f79535-47bb-0310-9956-ffa450edef68

cscorley/solr-only-mirror,cscorley/solr-only-mirror,cscorley/solr-only-mirror