Ecfv5 Generated Files

[BryceStevenWilley]

Way too big to really review, but it's not executing any code yet. All it's doing is:

• making it so that the Xsd Downloader can handle ECFv5 XML files (different named files could have the same schema contents, can't have duplicate schemas, so we have to hash the contents of the file when downloading them)
• Add a bunch of stuff to the redo_wsdl.py file to closer match what we're doing when downloading XML / generating Java
  • not perfect yet, as there's still a lot of manual java namespace re-naming that we have to do that isn't supported by wsdl2java. Ideally, this will be baked into the python at some point (see Make redo_wsdl.py perfect #337)
• Make the shell / abstraction layers for handling multiple versions of the ECF5 schema at the same time, based on the TylerEFM package
  • Not adding to ECF4 because we're trying to move away from it, and any time adding it there should be spent just making the move to ECF5.

Will make this PR, self review, and merge. Nothing to really fail or run yet, won't be until some other ECF 5 code starts coming in, which it can do soon