rewrite the xsd:datetime type so that PSE3 will let these through
the last revision broke the build because I had a test case in main,  that all worked in eclipse where the test scope is merged with the main scope.  While fixing this I realized that all the other operators on primitive triples were in the millipede project so I moved this one there to continue the pattern
bring in chopper and chopper-test projects for work on pig;  chopper will contain Java UDF and pig scripts;  chopper-test will have expensive integration tests that we can't run on every build