logbody = false causes body not to be sent to socket

[samoconnor]

I've put a println(reqstr) in connectandsend just before @retryif Base.UVError write(conn.socket, reqstr) to see what gets sent over the socket.

When I do HTTP.get("http://httpbin.org/ip"; logbody=false), I see this...

GET /ip HTTP/1.1
User-Agent: HTTP.jl/0.0.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8,application/json; charset=utf-8
Host: httpbin.org

[request body logging disabled]

Looks related to #130. i.e. request if buffered into a string by the same body(::io, ...) method that is used for logging.