Minor change on 'test handler'
Implement stat() function in HTTPResource
Structural adjustments. Moved some 'state variables' from HTTPUtility
into HTTPChannel class
Updated session close method,
Adjusted several class names for better readability,
Considered using enum to represent some of handler states,
Other minor structral changes.
Supplements javadoc
Modify synchronized variable for auto-closed connection. This ensures
the consistency of connection of a specific channel.
Modify some of javadoc comments
Modify the source of getting new channel assignment for closed
connection.
Modify close method on channel slightly. It currently closes
immediately.
Update close method. Completely shut down a session only when previous
on-going responses has finished.
Merge pull request #4 from TimDu/httpmodule

HTTP module updates