HTTP Proxy, PUT & POST, unit tests and refactoring.

Implemented/modified PUT & POST to not used chunked encoding for the request.
Made the unit test much happier and probably a better thing for the pipeline.
Have a cheesy static & dynamic proxy capability using both local options and
a way to wire into LLProxy in llmessages.  Not a clean thing but it will get
the proxy path working with both socks5 & http proxies.  Refactoring to get
rid of unneeded library handler and unified an HttpStatus return for all
requests.  Big batch of code removed as a result of that and more is possible
as well as some syscall avoidance with a bit more work.  Boosted the unit
tests for simple PUT & POST test which revealed the test harness does *not*
like chunked encoding so we'll avoid it for now (and don't really need it
in any of our schemes).