Implemented If-Modified-SInce support.
Added date parsing for if-modified.
Re-organized handlers package.
Updated directory methods, moved isNotModified() detection to file task, improved directory listings.
Updated default directory listing.
Passed Request to directory object.
Made Parameters() an Externaizable object.
Server parameters are passed to Request object.
Updated to send Server tag in responses.
Added standard "Vary=Accept-Encoding" to responses.
Cleaned up Vary: Accept-encoding addition (made conditional); cleaned up Transfer-Encoding addition.
Plumbing for asynchronous directory reads.
Removed needless cast.
Streaming response still needs a content type.
Fixed spacing and adjusted setup for default files.
Renamed BufferContainer and BufferContainerHeader to ResponseContent and ResponseContentHeader
Removed next sequence from ResponseContent - not really used.
Response objects no longer contain bodies - two ResponseContent messages are sent and a factory generator to handle it.
Removed commented out method.
Optimized some of the memory management and removed packet sequence.