Rugby 4.2 release: the non-blocking http version

Hi y'all, Subject says it all: added httpr protocol and thus the /http-deferred refinement to Rugby, your one-line solution to safe distributed computing. What's new: - HTTP transport layer supports non-blocking behaviour on the client. - Added httpr:// protocol cuz of previous point - HTTP transport protocol layer is broken between version 4.2 and lower versions. Upgrade all! - Added /http-deferred refinement everywhere - Improved docs a bit. Read them again! Changes to the docs are few but important! See tunnel.r in the modules section for sample usage of httpr:// NOTE: httpr:// is Rugby specific, it does not support HTTP codes such as 302 (forwarding) or 407 (proxy auth). If does use Rebols built-in proxy support. NOTE2: secure-serve starts a server in both secure and insecure mode, so that Pro users can connect securely, and the rest can connect insecurely. Enjoy, Maarten