RFR: 8087112: HTTP API and HTTP/1.1 implementation

[Michael McMahon]

Hi,

A new revision of the API can be seen at:

http://cr.openjdk.java.net/~michaelm/8087112/04/

The main changes are:

- package name change. Moved to own package java.net.httpclient

- proxy setting uses ProxySelector (a static factory method will be added
   to ProxySelector for setting a simple fixed address for all proxies).
   Using ProxySelector gives access to system default proxies.

- HttpResponseBodyProcessor uses flow control based on Flow api.

- miscellaneous doc cleanups/clarifications

Thanks,
Michael