PIG-2955: Fix bunch of Pig e2e tests on Windows

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1482476 13f79535-47bb-0310-9956-ffa450edef68
PIG-2959: Add a pig.cmd for Pig to run under Windows

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1482483 13f79535-47bb-0310-9956-ffa450edef68
PIG-3025: TestPruneColumn unit test - SimpleEchoStreamingCommand perl inline script needs simplification

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1482499 13f79535-47bb-0310-9956-ffa450edef68
PIG-3026: Pig checked-in baseline comparisons need a pre-filter to address OS-specific newline differences

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1482501 13f79535-47bb-0310-9956-ffa450edef68
PIG-3291: TestExampleGenerator fails on Windows because of lack of file name escaping

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1482510 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk