build: prevent empty directory in git checkout

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene_solr_3_1@1133159 13f79535-47bb-0310-9956-ffa450edef68
1 file changed
tree: 674e9f48c2319d34302372153eb93055ece9be86
  1. dev-tools/
  2. lucene/
  3. solr/
  4. .hgignore
  5. build.xml
  6. README.txt