PIG-3029 TestTypeCheckingValidatorNewLP has some path reference issues for cross-platform execution


git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1434467 13f79535-47bb-0310-9956-ffa450edef68
PIG-2788: improved string interpolation of variables (jcoveney)

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1434521 13f79535-47bb-0310-9956-ffa450edef68
Merge branch 'trunk' of https://github.com/apache/pig into trunk