fix pregelix driver for the case hadoop_home is not set

git-svn-id: https://hyracks.googlecode.com/svn/branches/fullstack_release_candidate@3175 123451ca-8445-de46-9d55-352943316053
1 file changed
tree: f09f61a25d0f522d0caf8d4e2324860bd2c05f56
  1. algebricks/
  2. hivesterix/
  3. hyracks/
  4. pom.xml
  5. pregelix/