	Make sure Content-Length gets nulled out properly when set to null.
	Make sure Content-Length gets nulled out properly when set to null.

	When Content-Length is set to null either through the property or
	the SetContentLength function we need to remove the property
	from the collection and set the field to null.

mdavid/manos-spdy,mdavid/manos-spdy,mdavid/manos-spdy,jacksonh/manos,mdavid/manos-spdy,jmptrader/manos,jmptrader/manos,jacksonh/manos,jmptrader/manos,jacksonh/manos,mdavid/manos-spdy,jacksonh/manos,jacksonh/manos,jmptrader/manos,jacksonh/manos,jacksonh/manos,mdavid/manos-spdy,jmptrader/manos,jmptrader/manos,jacksonh/manos,jmptrader/manos,mdavid/manos-spdy,jmptrader/manos