Started API reimplementation
URL refactoring
A bit url polishing
url::query returnes url_query object
Simplified example's requests implementation
http_response/request  must not be copy-on-write
Some API changes

Added http headers
Headers polishing
Indentation polishing
Added move-constructor for http_headers from vector
url_query::item should return const reference
Added buffered stream
Added http_response::reason
Added read-flow
Merge branch 'master' of github.com:reverbrain/swarm into new-api

Conflicts:
	example/elliptics/io.hpp
Added on_buffered_upload handler
Added more move semantic to thevoid API
Moved swarm::access_manager to external library
Indentation fix
Fixed boost::asio-based event-loop