LUCENE-5207: Update to antlr 3.5 (which produces no warnings while compiling with java 7). Also fix the regen-macro to handle windows file paths while replacing

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene5207@1523042 13f79535-47bb-0310-9956-ffa450edef68