PIG-3487: Fix syntax errors in nightly.conf

git-svn-id: https://svn.apache.org/repos/asf/pig/branches/branch-0.12@1526590 13f79535-47bb-0310-9956-ffa450edef68
PIG-3370: Add New Reserved Keywords To The Pig Docs (cheolsoo)


git-svn-id: https://svn.apache.org/repos/asf/pig/branches/branch-0.12@1526723 13f79535-47bb-0310-9956-ffa450edef68