Auto index & optimize imports.  And switch to java5 for-each in place of some iterators, generics issues.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1598141 13f79535-47bb-0310-9956-ffa450edef68
Fix cast.  IntelliJ didn't seem to care.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1598143 13f79535-47bb-0310-9956-ffa450edef68