DynamoDS/Dynamo — pull request #1611 by junmendoza (2014-05-05 10:32:31+00:00)
Title: Fix changeSetApplier on handling VM graphnodes

1. Use the OriginalAST property to check for redefined statements .
AstID is only used within the core VM execution
2. Fix old testcases with invalid results
3. Add testcase simulating modification of connections to a CBN